Outer Space

Jupiter's moon, Europa, is one of the most promising candidates for life elsewhere in the solar system.

Juno Will Eventually Go Up in Flames to Protect Theoretical Alien Life

Juno, we hardly knew you

An artist's concept of a moon-sized body slamming into a Mercury-sized world in another solar system. High speed collisions like this were more likely to occur in systems with gas giants, but they took place early in a planet's life, allowing time for the world to recover. (NASA/JPL-Caltech)

How a Young Jupiter Acted as Both Protector and Destroyer

Like a boisterous older sibling, the gas giant both beat up and protected young Earth

This Is What Jupiter Sounds Like

Listen as Juno bursts into the gas giant’s magnetosphere

An artist's rendition of Juno in orbit around Jupiter. The craft is powered entirely by the sun's rays.

It's Official: We Are Now in Orbit Around Jupiter

After a nerve-wracking entry, NASA spacecraft Juno successfully entered the gas giant's orbit

Photograph of the megalithic cluster of Carregal do Sal, one of the passage graves in Portugal that may have doubled as an ancient telescope.

These Ancient Tombs May Have Been Both Grave and Observatory

The best view of the heavens could be from within the tomb

Ultraviolet images overlying a photo of Jupiter taken by the Hubble Space Telescope

Catch the Solar System’s Best Light Show With New Images of Jupiter’s Auroras

Jupiter’s Auroras Are the Best Light Show in the Solar System

Help astronomers track asteroid 2010 NY65 as it streaks across the sky on Asteroid Day

Track These Space Rocks From Your Couch on Asteroid Day

With just a click, you can help astronomers learn more about two nearby asteroids

The "Mystic Mountain" image released for the Hubble's 20th anniversary showcases a three-light-year tall pillar of gas and dust stretching out of the Carina nebula. Mostly made of cool hydrogen, the structure is created by stars releasing jets of gas, which is worn away by radiation from other nearby stars, giving it its eroded shape.

Breathtaking Images to Celebrate the Hubble Space Telescope Getting Another Five Years of Life

These amazing views are just a selection of the beautiful images the craft has captured over the years

Perhaps it's best that this comet is billions of miles away from Earth.

This Perfume Smells Like a Comet

Yum?

Meet Three of Earth's Tiny Celestial Buddies

A handful of quasi-satellites, mini-moons and Trojan asteroids tag along with Earth as it whizzes around the sun

Just what lies beyond the next valley, canyon, crater, or hill is NASA's perpetual question.

Check Out NASA's Retro Mars Recruitment Posters

Farmers, teachers, surveyors and engineers will all be needed in the envisaged Mars settlement

An illustration of asteroid 2016 HO3's orbit.

Scientists Spot Tiny Asteroid Tagging Along Behind The Earth

It's our very own “quasi-moon”

A concept design for a space elevator.

A New Hitch in the Plan for Building a Space Elevator

Carbon nanotubes may not be as strong as scientists once thought

This concept drawing shows Juno in orbit around the solar system's largest planet.

Here’s What Will Happen When Juno Gets to Jupiter

It all goes down July 4

An artist's rendition of merging black holes that produce gravitational waves.

Gravitational Waves Strike Twice

Scientists announce the second detection of gravitational waves

Artist's impression of the simultaneous stellar eclipse and planetary transit events on Kepler-1647. Such a double eclipse event is known as a syzygy.

This Jupiter-Sized Planet Is the Largest Found Orbiting Two Suns

Any orbiting moons could be habitable—but scientists have yet to spot them

The supernova designated SN 2016cok can be spotted at the edge of the Messier 66 galaxy, marked by the two rectangular crosshairs.

Spy Two Supernovae in June's Night Sky

After millions of years, their light is finally bright enough to see from Earth

An artist’s conception of the LISA Pathfinder spacecraft in orbit at Lagrange Point 1.

A Spacecraft Just Measured Movement Less Than the Width of an Atom

The successful results pave the way for a future mission that could detect low-frequency gravity waves

This artist's concept depicts select planetary discoveries made to date by NASA's Kepler space telescope.

How Would You React If We Discovered Alien Life?

Experts weigh in on what the detection of other life forms might mean to the human race

Telescope array

The Hunt for High-Energy Photons Takes Place From a Mountaintop in Mexico

A new telescope built from water tanks might help answer some of the biggest questions in astronomy

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