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Outer Space

Mount Etna's glowing lava flow can be spotted at bottom left.

Mount Etna’s Fiery Eruptions Are Visible From Space

Astronaut Thomas Pesquet captured an image of the volcano’s glowing lava

The latest iteration of the four-legged LEMUR exploration robot clings to a test rock surface in Aaron Parness’ lab in a recent test of its microspine capabilities.

Think Big

A New Generation of Interplanetary Rovers Is Crawling Toward the Stars

These four-legged, wheel-less robots will explore asteroids and the frigid outer worlds of our Solar System

Shortly after the announcement of the TRAPPIST-1 system, NASA crowdsourced its Twitter followers for possible planet names. The actual process of naming new planets, however, is a bit more involved.

Ask Smithsonian 2017

How Do New Planets Get Their Names?

Sorry, Planet McPlanetface: Asteroids, moons and other celestial bodies go through a strict set of international naming guidelines

This grapefruit-sized object is Vanguard TV-3, an exact replica of Vanguard 1 that failed to launch into orbit. It's now on display at the National Air and Space Museum.

The World’s First Solar-Powered Satellite is Still Up There After More Than 60 Years

This tiny grapefruit-sized satellite will still be up there well into the 2100s if we don’t take it down

Computer-simulated global view of Venus.

Think Big

The Case for Going to Venus

Sending a probe to Earth’s lifeless twin could help us understand how life rises—and falls—on faraway planets

This 230-foot-tall antenna helped NASA locate a long-lost spacecraft.

Cool Finds

NASA Spots India’s Long-Lost Lunar Orbiter

Chandrayaan-1 had been missing for eight years

Planet launched 88 more satellites in February.

How Daily Images of the Entire Earth Will Change the Way We Look At It

With more satellites than any other company, Planet Labs gives environmental researchers daily data

An artists rendering of how a solar sail might be powered by a radio beam from the surface of a planet

New Research

Are Fast Radio Bursts from Alien Spacecraft? It’s Unlikely, but Possible

A new paper raises the (distant) possibility that the unusual high-energy bursts from the cosmos are from intergalactic ships

First image from NASA's Geostationary Lightning Tracker

Trending Today

Next-Gen Lightning Tracker Photographs Storms From Space in Stunning Detail

Part of the GOES-16 weather satellite, the geosynchronous imager promises to improve storm detection and reveal the secrets of thunderbolts

Space weather may look cool, but it could hurt astronauts.

New Research

When it Comes to Predicting Solar Storms, Space May Not Be the Place

A new study shows that earth-based observations can get warnings out sooner

Valentina Tereshkova, the first woman in space. This photo was taken in 1969.

Happy Birthday to the First Woman in Space

She spent almost three days in space on her first flight

This lumpy moon would have made short work of NASA's MAVEN craft.

Trending Today

NASA Spacecraft Has Close Call With One of Mars’ Moons

Left unattended, MAVEN and Phobos could have collided

Artists rendering of the suspected Planet 9

Trending Today

NASA Wants the Public to Log In to Help Find Planet 9

Citizen scientists can examine photos to help discover a new planet, which recent evidence suggests is hiding at the edge of the solar system

Cunitz was among the few who saw the truth in Johannes Kepler’s laws of planetary motion, which stated that planets moved in elliptical orbits around the sun. Here, a concept drawing of the Earth and moon in orbit around the sun.

Space Hub

The 17th-Century Lady Astronomer Who Took Measure of the Stars

Astronomer Maria Cunitz might not be such an anomaly, were other women given the same educational opportunities

What thorny ethical issues await us once we make it to Mars? A composite image of the red planet, composed by processing about 1000 Viking Orbiter red- and violet-filter images have been to provide global color coverage at a scale of 1 km/pixel.

Think Big

When Humans Begin Colonizing Other Planets, Who Should Be in Charge?

The biggest threat humans pose to other worlds is what we don’t know—or what we think we know, but don’t

Unlike the Apollo spacecraft, Orion will have solar panels to help power longer space journeys, as shown in this concept art of the spacecraft orbiting Earth.

Ask Smithsonian 2017

What’s Really Changed—and What Hasn’t—About Getting Humans to the Moon

NASA’s Orion will combine vintage tech with massive advances in computing power and electronics we’ve made since 1972

Ask Smithsonian 2017

Why Is Pennsylvania Ave D.C.’s Main Thoroughfare and More Questions From Our Readers

Your questions answered by our experts

Watch the moon from this moonscape in Craters of the Moon State Park, Idaho.

Fifteen Perfect Spots to Watch the Total Solar Eclipse as it Crosses the U.S. This Summer

One of the most exciting astronomical event in U.S. history is happening in August

The seven Earth-sized planets orbiting the dwarf star TRAPPIST-1.

Think Big

Scientists Spot Seven Earth-Sized Planets Orbiting a Nearby Star

This newly discovered solar system presents the best opportunity yet to study potentially habitable worlds, NASA scientists report

This approximate true-color image of the Gusev Crater is one of the three potential landing sites for the Mars 2020 rover.

Life in the Cosmos

Check Out NASA’s Three Options for the 2020 Mars Rover Landing

Scientists have narrowed down potential sites for the next rover to set wheel on the red planet

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