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Astronomy

Within Science

Spacecraft enters the Martian atmosphere, causing intense heating and friction that is displayed in a glowing, fiery tail of light.

Large rounded blue and white instrument with round opening at the front. Man faces it in foreground. Title card reads, "A flying telescope in a 747?!"

Textured mount-like landform. Caption: It was incredible how Earthlike Titan appeared.

Seedlings burst through the dry surface of an arid landscape. Text reads, “AIRS. Advancing Our Understanding of Earth’s Climate.”

Still image from: All the Answers: Chocolate, the Cosmos, Quicksand

Still image from: All the Answers: Constellations, Manatees, the Dead Sea

Still image from: All the Answers: Gravity, Black Holes, Rainbows

Still image from: All the Answers: Hurricanes, Owls, the Moon

Still image from: All the Answers: Mars, Galapagos, Geysers

Still image from: All the Answers: The Science Behind Fear, the Big Bang, the Himalayas

Still image from: All the Answers: Vampires, Antarctica, the International Space Station

Astronaut in a space suit working on a machine. Caption: Training takes place in the neutral buoyancy lab.

Two cartoon characters wearing scuba gear in front of a large porthole. Spanish captions.

Cartoon character holding a hamburger while standing next to a refrigerator. Spanish captions.

Diagram of our solar system with Jupiter, Saturn, and Uranus identified. Spanish captions.

Cartoon of two people standing close to a spaceship that as crashed and a third person a distance away. Spanish captions.

Cartoon of a face against the backdrop of the surface of a barren planet. Spanish captions.

Cartoon of a person in a spaceship with space visible through a window in the ship's wall. Spanish captions.

Cartoon of a person sitting at a complex control board. Spanish captions.

Cartoon characters looking out a window into space. Spanish captions.

Cartoon of a person talking to an alien. Spanish captions.

Cartoon of a planet moving in front of the sun. Spanish captions.

Cartoon of an alien in elaborate clothes. Spanish captions.

Cartoon of a person standing on the deck of a spaceship. Spanish captions.

Cartoon of two people and a large alien. Spanish captions.

Cartoon of three people in space suits. Spanish captions.

Cartoon of two people, one at the controls of a spaceship. Spanish captions.

Diagram of the Moon orbiting Earth. Spanish captions.

Cartoon of people and an alien in a watercraft, riding the crest of a large wave near land. Spanish captions.

Cartoon of a rocky object approaching the atmosphere of a planet. Spanish captions.

A spiral galaxy with glowing lights throughout the arms of the spiral and a bright glowing light at the center. Spanish captions.

Person pointing towards a small creature. Spanish captions.

Cartoon of a robot. Spanish captions.

Cartoon of three people standing in front of a computer screen. Spanish captions.

Cartoon of a bright star with a glowing aura and yellow and orange licks of light emitting from the center. Spanish captions.

Cartoon of a computer screen displaying a spaceship. Spanish captions.

Cartoon of a person talking to an alien. Spanish captions.

Cartoon of two people in the deck of a spaceship and a third person handing them a helmet for a space suit. Spanish captions.

Hawa Mahal. Caption: Also known as the Palace of Winds,

Person speaking in front of a background showing planets and space. Caption: And he detected a set of three planets around this star.

Bright light appearing behind the horizon of a planet. Ask a Scientist: How can I watch the solar eclipse safely?

The event horizon of a black hole. Caption: The black hole has a radius, called the event horizon,

Horizontal view of a black hole. Caption: literally nothing can escape from it, not even light.

Bright light appearing behind the horizon of a planet. Ask a scientist: What makes solar eclipse glasses so special? Can I just wear sunglasses?

Bright light appearing behind the horizon of a planet. Ask a Scientist: What's happening on Aug. 21st, 2017? And what can people potentially see?

Bright light appearing behind the horizon of a planet. Ask a scientist: Where can I get solar eclipse glasses?

Bright light appearing behind the horizon of a planet. Ask a scientist: Where can I see the eclipse in totality?

A galaxy fades out. Caption: The original galaxy would be gone.

A huge mass of hot gas swirls into a star. Caption: that swirls onto the massive star.

Illustration of the earth revolving the sun. Caption: As the earth moved around the sun,

illustration of asteroids revolving the sun and other planets. Caption: Asteroids, though, move across the sky at different rates.

Illustration of a wave striking an atom. Caption: The shortest wavelength light are gamma rays,

Illustration of a woman talking to the Alien M51. Caption: You've got to move the earth back where it belongs.

The celestial image of a red starry surface. Caption: Where new stars are born,

Animation of two galaxies colliding. Caption: they smash together with tremendous force.

Image of Andromeda galaxy. Caption: is about 160,000 light years away.

An image of the outer space. Caption: it's eventually blocks out all visible light.

An Illustration depicts the three positions of the universe. The difference between the first two and the last two positions is labeled, + 2 units. The difference between the first and last positions is labeled, + 4 units. Caption: the more the expansion pushes them apart.

An electromagnetic spectrum with a bright star over the infrared range. Caption: Hotter objects glow in visible light.

An illustration depicts the spiral structure of a galaxy. Caption: Many galaxies have a spiral structure,

Sun and a red planet in outer space. Caption: we can tell what comprises the atmospheres.

Massive asteroid soars through the universe towards a star cloud. Text reads, “Asteroids.”

Asteroid in deep space breaks apart into many pieces. Text reads, “Asteroids, Comets, and Meteors.”

Irregularly shaped gaseous shape with bright stars glowing around and behind it. Caption: with the potential to explore our universe

Still image from: Big Astronomy: People, Places, Discoveries

Person speaking with a crescent moon visible in the daytime sky behind them. Caption: Sometimes you can see the moon during the daytime.

Blue comet soars through dark, twinkling outer space. Text reads, “Comets.”

Blue and purple star cloud illuminates the darkness of outer space. Text reads, “Constellations.”

Nebulous green, pink, and orange background with glowing flecks. Title card reads, "Core Astronomy."

Three images of a textured surface. Caption: We see cracks and ridges, but few craters.

Still image from: Crash Course Kids Space Sceince: Following the Sun

Still image from: Crash Course Kids Space Science: Constellation

Still image from: Crash Course Kids Space Science: Earth's Rotation and Revolution

Still image from: Crash Course Kids Space Science: Everything Revolves Around You

Still image from: Crash Course Kids Space Science: Gas Giants Weather

Still image from: Crash Course Kids Space Science: Glow On

Still image from: Crash Course Kids Space Science: Here Comes the Sun

Still image from: Crash Course Kids Space Science: Life on Other Planets

Still image from: Crash Course Kids Space Science: Orbits Are Odd

Still image from: Crash Course Kids Space Science: Planetary Plants

Still image from: Crash Course Kids Space Science: Seeing Stars

Still image from: Crash Course Kids Space Science: Spaced Out

Still image from: Crash Course Kids Space Science: Star Personalities

Still image from: Crash Course Kids Space Science: Super Stars Constellations

Still image from: Crash Course Kids Space Science: The Zodiac Constellations

Still image from: Crash Course Kids Space Science: Weather in Space the Rocky Planets

Still image from: Crash Course Kids: The Ecliptic

A cylindrical space craft with equipment and antennas protruding from it in relief against a large grayish-brown planet with rings in the background. Caption: We'll shoot between Saturn and its rings.

A rectangular space craft with a large, flat round disc pointed towards the planet earth, visible in the background. Caption: We've launched hundreds into low Earth orbit for years.

A hexagonal space craft with three much larger wings equally spaced around the hexagonal base flying in space with the planet Jupiter in the distant background. Caption: Juno's going to Jupiter to learn about how it was formed.

A person crouching in front of a vertical panel. A device is adhered to the panel. Caption: Real Time. We have electrostatic grippers,

A roughly cube shaped space craft with a communications dish and two large rectangular solar panels flying through space. Caption: It wouldn't be possible without ion propulsion.

A cube shaped space craft on a tripod of legs and four rotor-like wings on top sitting on the surface of a barren planet. Caption: 5 Survive Mars Environment. "And it has to survive the harsh environment of Mars."

A roughly rectangular space craft with two solar wings approaches a much larger round spacecraft surrounded in petal-like protrusions. Caption: The one in space will be tens of meters.

A cylindrical space craft with two solar wings and two rods capped in spheres protruding from it in relief over the planet Earth and space. Caption: The Hubble Telescope is made of several different instruments.

Text reads, “Curiosity at Martian Scenic Overlook,” against a blurry shot of the Mars landscape. The on-screen caption reads, “NASA Jet Propulsion Laboratory California Institute of Technology.”

Text reads, “Curiosity Rover Snaps Billion Pixel Panorama,” against a blurry photo of Mars. The on-screen caption reads, “NASA Jet Propulsion Laboratory California Institute of Technology.”

Brightly glowing half-spheres joined so that they mirror each other against a gaseous background. Caption: make the core absorb energy instead of generating it.

Bright red planet with a mottled surface. Caption: Titan has a dense nitrogen atmosphere,

Gloved hand reaching into a container emitting a foggy, mist-like cloud. Caption: Look at all this moisture being frozen.

Person attaching different colored and shaped objects to a Styrofoam ball. Caption: Those gas jets are actually forming the coma of the comet,

People standing in front of a giant inflated black plastic pouch. Turn fan back to high speed. Caption: Once the door is cut, turn the fan on high.

Person holding a paper cup with rubber bands and binder clips wrapped around a tubular object. Caption: (Nate) There's lots of ways of getting the straw into the potato.

Illustration of the Earth. Caption: Noon is when the sun is highest in the sky.

Diagram of the solar system with Mars, Earth, Venus, and Mercury identified. Caption: There's an invisible force between the Sun and the planets

Illustration of the Earth from space. A line travels from the north pole to the south pole. The Earth is tilted slightly off-axis to the right. Caption: called an "axis," which goes through earth

Person in lab coat, gloves, and mask moving a large metal machine that is place above other complex metal machinery. Caption: Also key is state-of-the-art optical and laser technology:

Rocky, flat, barren landscape with a large planet covered in bands of color on the horizon and a star in the distance. Caption: where life might be found in our own solar system

Aerial view of geometric objects on the surface of a planet. Caption: (narrator) If the demand for lunar minerals expands,

Still image from: Everything Eclipses: Eclipse Community Preparedness Explained by the EMA

Still image from: Everything Eclipses: How to Explain an Eclipse to a Kindergartner

Still image from: Everything Eclipses: How to Safely View an Eclipse (Pinhole Viewer)

Still image from: Everything Eclipses: The Next Solar Eclipse (April 8, 2024)

Still image from: Everything Eclipses: What Is a Lunar Eclipse?

Still image from: Everything Eclipses: What Is a Solar Eclipse?

Still image from: Everything Eclipses: What Is an Astronomer?

An illustration depicts the formation of the Moon approximately 4.5 billion years ago.

Glowing star shining light on a planet. Caption: That tells you there may be a planet around that star.

Glowing light in the center of concentric rings of gaseous substance. Caption: Formed of an inner ring 4.5 billion years ago,

Text reads, “Explore Mars’ Jezero Crater With NASA’s Perseverance Rover,” over a photo of a rocky Mars landscape.

Close view of the moon partially illuminated. Caption: the moon experiences great temperature fluctuations

An illustration of Voyager 2 revolving Neptune.

Still image from: Go Jetters: Solar E-Glitch

Gentle waterfall. Spanish captions.

Closeup of the surface of the sun showing disturbances caused by solar wind. Caption: It's brought to earth by solar wind from the sun.

Still image from: Help NASA Capture the Sounds of a Total Solar Eclipse

Still image from: Hey Duggee: The Space Badge

A space observatory. Caption: The telescopes made images of the region.

An illustration of solar system.

Illustration of the Earth its orbit. Object moving toward the orbit ahead of the current position of the earth with multiple possible trajectories. Refine the path. Caption: helps refine the projected path,

Against the dry and rugged landscape of Mars, we see an arm of NASA’s Perseverance with a video camera attached. The camera is labeled “Watson Camera.”

Digital illustration shows a diagram describing Martian winds showing the sun shining onto a thick layer of ice as debris from below the ice escapes into the air, blowing in the breeze. An arrow pointing to the right is labeled “wind.”

Rocket with multiple engines. Caption: the telescope was carried into space on April 24, 1990.

Still image from: Human Elements: Gaining Perspective in Microgravity

Still image from: Human Elements: In Origami, Science Unfolds

Still image from: Human Elements: Watching a Star Die

A sliver of glowing sun is seen over a horizon of water. Caption: a weak sun now rises over the marshlands of eastern England.

Glowing flare shines golden light on an image of Mars in the background. Text reads, "Insight Landing on Mars."

Person holding a magnet above a pile of metal shavings. Some of the metal shavings are adhering to the magnet. Caption: that exert a force on metal objects when they're nearby.

Man sits and talks to us in a room with a bookcase with books and different knick-knacks on the shelf such as a Gundam toy, a mini globe, and a space rocket.

A view of Moon in the dark sky. Caption: Maria, Latin for seas, and Sea of Tranquility, Mare Tranquillitatis.

Orange glare flares out from bright central object and is surrounded by flecks of colored light in outer space.

A battery gauge has 14 blocks, where 7 blocks are full. The grades of the battery gauge reads, from top to bottom, as follows. Gamma rays, X rays, U V, visible rays, and infrared. An arrow points from visible light to infrared.

Man looks at us with a stern expression and points his finger up like he’s telling us to stop. Behind him is a bookcase filled with books and knick-knacks like a Gundam toy, little bird figurines, and a small globe.

A star filled night sky. Caption: P B S.

Still image from: Journey to the Microcosmos: Microscopic Space Travelers

View of Mars in space. Text reads, “The Changing Face of Mars.”

Illustration of a small spherical object in greenish gas clouds near the surface of a larger object. Spanish captions.

Still image from: Lab Six: Galaxy Six (Spanish)

Still image from: Lab Six: Saturn Is Different (Spanish)

Still image from: Lab Six: Sun (Spanish)

Still image from: Lab Six: Sun II (Spanish)

Cartoon of a child in a car seat riding in the backseat of a car looking out the window. Caption: I love looking out the window when I'm riding in the car.

Mars rover sits next to an image of Mars beneath title card that reads, "Mars 2020 Landing Site: Jezero Crater Flyover." NASA icon at bottom is labeled, "Jet Propulsion Laboratory. California Institute of Technology."

Illustration of a starry night sky. Text reads, “How did Mars get such Enormous Mountains?”

Illustration of a split screen showing a robot with wheels on the surface of a red planet and people at a computer. Caption: engineers send computer commands overnight,

Illustration of a starry night sky. Text reads, “How do you choose a landing site?”

Illustration of the Sun, Earth, and Mars. Caption: the planets are in perfect positions to get to Mars

How do you land on Mars? Caption: Very carefully.

Diagram of the atmosphere above a planet's surface. A ship passes through the atmosphere at 13,000 mph and deposits a rover at 0 mph. Caption: we have to slow down from 13,000 miles an hour to zero.

Illustration of a starry night sky. Text reads, “How Long is A Year on Mars?”

Illustration of people in ancient Egyptian dress pointing over pyramids into the night sky. Caption: Even the ancient Egyptians called Mars "The Red One."

Illustration concentric circles with the Sun in the center and then Earth and Mars. Caption: In orbit, Mars is about 50 million miles farther away

Cartoon of a space rover on Mars signaling a satellite in the distance.

Illustration concentric circles with the Sun in the center and then Earth and Mars. Caption: Earth and Mars wind up on opposite sides of the sun.

Illustration of a starry night sky. Text reads, “What’s Inside Mars?”

Illustration of a robot with wheels on the surface of a reddish-brown planet. Caption: If Curiosity finds organics, it wouldn't prove life existed,

A photo of the Mars surface shows ridges with steep slopes on both sides.

An illustration of magnetic field surrounding a planet.

Small spherical object in relief against a red glowing background. Caption: It's the closest planet to our sun,

Closeup of a meteor with a glowing fireball at the front and plumes of smoke trailing behind as it shoots through the air above rippling water. Text reads, "Meteors."

Shadowy closeup of Mars appears behind text that reads, "Perseverance: The Search for Ancient Life on Mars." NASA icon at bottom is labeled, "Jet Propulsion Laboratory. California Institute of Technology."

Illustration of low, round huts with a person walking through them. Caption: Arriving home, Moko saw that the moon was there in the sky.

Illustration of the Sun and planets closest to it, including Earth, shedding bits of bright light. Caption: Solar wind is very hot and blows across all the planets

Illustration of the Sun, moon, and Earth. Caption: and the moon circles around the earth.

Illustration of the Earth and other planets with a belt of floating rocks between them. Caption: Our planet is surrounded by a belt of asteroids

Illustration of stars on a deep blue background. Caption: It's inside these clouds that stars are born.

Illustration of a high mountain with a channel in the middle worn away and a river of water on the bottom of the channel. Caption: We call this phenomenon erosion.

Illustration of earth against space. Earth has a line through the north and south pole, but the line is not vertical. It is tilted. Caption: But it doesn't spin completely straight; it is slightly tilted.

Top half of the moon floats in darkness. Text reads, "Moon Phases."

Street view of the entrance of the Adler Planetarium, a domed building made of darker stone with a wide staircase leading up to it. It is surrounded by a building of a triangular shape made of glass.

Still image from: NASA Goddard SFC: 2024 Total Solar Eclipse Map

Still image from: NASA Goddard SFC: Different Ways to View a Solar Eclipse

Still image from: NASA Goddard SFC: Eclipse Phases

Still image from: NASA Goddard SFC: Fermi Gamma-ray Space Telescope--14 Years of Observations

Still image from: NASA Goddard SFC: Touching the Sun With Solar Stones

Curiosity rover stands in clay colored dirt beneath a pale orange sky. Text reads, "Curiosity. Climate Clues on a Martian Mountain." NASA icon at bottom is labeled, "Jet Propulsion Laboratory. California Institute of Technology."

We look over the side of the Curiosity rover at a rocky brown terrain. Text reads, "NASA's Curiosity Mars Rover Finds a Changing Landscape." Blue NASA icon appears at bottom.

Ingenuity Mars Helicopter flies above sandy ridges beneath gray sky. Text reads, "Ingenuity Mars Helicopter. The First Aircraft on Mars."

We look down over the edge of the Perseverance Mars rover at a rocky brown landscape with tracks running down the middle.

Part of a space craft as seen from space. Caption: But are the risks to the astronauts acceptable?

Mars hovers in shadows against the blackness of space. Text reads, "Opportunity. NASA Rover Completes Mars Mission." NASA icon at bottom is labeled, "Jet Propulsion Laboratory. California Institute of Technology."

A planet with different colored bands on the surface and rings outside the atmosphere. Caption: The atmosphere is mainly made up of hydrogen and helium,

Solar panels tilted toward the sky. Caption: can be used to create electricity

Two scientists working at the Large Hadron Collider.

Planet Mars. Caption: negative 63 degrees Celsius and negative 81 degrees Fahrenheit. Source, NASA.

An illustration depicts some planets and their orbits, revolving around a sun. Caption: N A S A.

Two black holes in the center of a galaxy. Caption: L I G O slash S X S slash R Hurt and T Pyle.

A black hole in the center of a galaxy. Caption: Black hole.

A telescope built on the top of a mountain. Caption: Large synoptic survey telescope. Science office slash L S S T project slash N S F slash A U R A.