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Science / Space

A color-enhanced photo of Pluto that was captured by the New Horizons spacecraft in 2015

The Seven Most Amazing Discoveries We’ve Made About Pluto

Though technically not a planet, it has as rich geology as any of its planetary siblings in the solar system

An artist’s depiction of NASA’s Europa Clipper spacecraft

NASA Launches Europa Clipper to Search for Signs of Life on Jupiter’s Moon

The huge spacecraft is headed toward the icy moon Europa, where it will use an array of instruments to survey for geologic activity, magnetism and more

The Milky Way lights up a night sky accented by the bright stars of the “summer triangle.”

How to Find the Ten Brightest Stars in the Night Sky

From Aldebaran to Vega, these gleaming beacons dazzle Northern Hemisphere viewers at various times of the year and provide a useful entry point into amateur astronomy

Saturn, the second-largest planet in our solar system, is best known for its layered rings.

The Seven Most Interesting Discoveries We’ve Made by Exploring Saturn

Scientists continue to learn new things about the planet, its sweeping rings and its many moons

The tinfoil-covered vial at right holds about four grams of an asteroid brought to Earth from deep space. It may also hold the key to how life began here. The vial at left holds ground-up quartz that will act as a control in chemical investigations.

Inside Scientists’ Quest to Find the Secrets of Life in Four Grams of Asteroid Dust

NASA researchers are scrutinizing rocks and dirt brought to Earth from the asteroid Bennu

Apollo 11 astronaut Buzz Aldrin deploys a device to detect moonquakes during the first moonwalk.

Thousands of Moonquakes Rocked the Apollo Landing Sites in Less Than a Decade

A new study found 22,000 previously unidentified lunar seismic events recorded between 1969 and 1977

Apollo 11 astronauts watched the Earth rise above the moon’s horizon on July 20, 1969.

Apollo Astronauts Left American Flags, Boots and Even Poop on the Moon. Here’s Why These Artifacts Matter

Fifty-five years after the first human lunar landing, scholars and experts are looking to preserve the past as more nations and companies undertake moon missions

Could different backyard birds, such as a robin and a bluebird, produce viable offspring? 

Could a Robin and a Bluebird Have Babies? And More Questions From Our Readers

You’ve got questions. We’ve got experts

The Milky Way spreads across the night sky above the Vera C. Rubin Observatory. 

This Revolutionary New Observatory Will Locate Threatening Asteroids and Millions of Galaxies

Beginning next year, the Vera C. Rubin Observatory will use the world’s largest digital camera to give us a whole new view of the universe

The planet-forming disk is made of gas and dust.

This Giant Cosmic ‘Butterfly’ Is a Planet-Forming Disk

New research has confirmed that the celestial object may be the biggest of its kind ever found

The northern lights appear near Saskatoon in Saskatchewan, Canada, on May 11, 2024.

Missed the Auroras in May? Here’s How to See Them Next Time

Three veteran aurora chasers and a NASA scientist share everything you need to know to check these dazzling displays off your bucket list

A composite image of Jupiter, taken by the Juno spacecraft

The Seven Most Amazing Discoveries We’ve Made by Exploring Jupiter

The giant planet is a world of extremes

Where do we get the seeds for seedless fruit?

Where Do We Get Seeds for Seedless Fruit? And More Questions From Our Readers

You’ve got questions. We’ve got experts

Bruce McCandless floats freely in space with Earth 170 miles beneath him.

The Inside Story of the First Untethered Spacewalk

On February 7, 1984, astronaut Bruce McCandless ventured out into space and away from shuttle Challenger using only a nitrogen-propelled, hand-controlled backpack

This false-colored image of Mercury reflects the varying age and mineral composition of the surface.

The Seven Most Amazing Discoveries We’ve Made by Exploring Mercury

Only two robotic missions have made it to the Swift Planet, but they were crucial for upending many false assumptions of that sun-scorched world

Wide-ranging anecdotal reports and studies suggest many animals respond to a total solar eclipse, whether by showing anxiety, performing nighttime behaviors or doing something unexpected.

How Do Animals React to a Total Solar Eclipse? Scientists Document Strange and Surprising Behaviors

Nature enthusiasts work with researchers to figure out how creatures respond to the celestial phenomenon

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There's More to That

Why We Love Eclipses

Two perspectives on the astronomical phenomenon that has fascinated humans for as long as we’ve been watching the skies

A total solar eclipse as seen from Kentucky in 2017

How Ancient Civilizations Reacted to Eclipses

Communities may have thought the celestial events were messages from the gods, a reason to abandon a settlement or a cue to end a war

The Whirlpool Galaxy (also known as M51), located 31 million light-years from Earth, is a particularly radiant object seen during the Messier marathon. This image was captured by the Hubble Space Telescope—skywatchers looking through a backyard telescope or binoculars would see the galaxy in far less detail.

What It Takes to Complete the Ultimate Skywatching Endurance Challenge

The “Messier marathon” prompts space hobbyists to spot 110 celestial objects in one night, and the best time to try it is in March

NASA’s Mariner 10 spacecraft captured this view of Venus. The world has blistering surface temperatures, crushing atmospheric pressure and clouds of corrosive acid.

The Six Most Amazing Discoveries We’ve Made by Exploring Venus

Our sister planet’s cloudy exterior gave it an aura of mystery—until humanity developed the technology to probe past the veil

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