Outer Space

A photographic plate of the 1919 total solar eclipse, taken by Andrew Claude de la Cherois Crommelin and Charles Rundle Davidson during an expedition to Sobral, Brazil. The 1919 eclipse was used by Arthur Eddington, who observed it from the island of Principe off the west coast of Africa, to provide the first experimental evidence of Einstein's theory of relativity.

What the Obsolete Art of Mapping the Skies on Glass Plates Can Still Teach Us

The first pictures of the sky were taken on glass photographic plates, and these treasured artifacts can still help scientists make discoveries today

2007 OR10 is the largest object in our solar system with out a name.

The Largest Unnamed Object in the Solar System Needs a Title—and You Can Help

2007 OR10 needs a snazzier moniker; the public can now choose between ‘Gonggong,’ ‘Holle’ and ‘Vili’

Shortly after the first human space flight, the Soviet Union began planning to send a woman to space.

The First Group of Female Cosmonauts Were Trained to Conquer the Final Frontier

Two decades before the first American woman flew to space, a group of female cosmonauts trained in Star City of the Soviet Union 

Identical twin astronauts, Scott and Mark Kelly, are subjects of NASA’s Twins Study. Scott (right) spent a year in space while Mark (left) stayed on Earth as a control subject.

NASA's Study of Astronaut Twins Creates a Portrait of What a Year in Space Does to the Human Body

Wide-ranging research compares astronaut Scott Kelly to his earthbound twin brother, Mark

The image reveals the black hole at the center of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides 55 million light-years from Earth and has a mass 6.5 billion times that of the sun.

Astronomers Capture First-Ever Image of a Supermassive Black Hole

The Event Horizon Telescope reveals the silhouette of a black hole at the center of a galaxy 55 million light-years away

Exoplanet Core Orbiting a Dying Star May Help Astronomers Understand What Lies in Store for Our Solar System

It's likely the planetesimal orbiting a white dwarf 410 light years away was the core of a minor planet caught in its immense gravity

Raging Rivers May Have Washed Over Mars for Billions of Years

A study of 200 river systems shows the waterways persisted even while the atmosphere was disappearing and the Red Planet was drying up

The most recent vortex on the left and the first one discovered in 1989 by Voyager 2.

There's a Dark and Stormy Vortex Brewing on Neptune

It is the sixth massive dark and stormy vortex found on the planet since 1989 and the only one astronomers have watched develop

Jennifer Levasseur from the National Air and Space Museum notes that the museum’s supply of popular astronaut foods is less comprehensive than its collection of rejects. “We only get what they didn’t eat (above: Apollo 17's spiced fruit cereal is now in the collections)."

Rita Rapp Fed America’s Space Travelers

NASA’s food packages now in the collections of the Air and Space Museum tell the story of how a physiologist brought better eating to outer space

An artist's concept of the Axel rover rappelling into a lunar pit.

NASA Considers a Rover Mission to Go Cave Diving on the Moon

The deep caverns and pits that dot the lunar surface could hold clues to the moon's history and perhaps provide shelter for future human exploration

NASA Releases Opportunity Rover's Final Panorama Photograph

The little Mars explorer was hit by a duststorm in June, 2018 and never recovered, but it did send back 354 images from on its final days

An ultraviolet image of the Andromeda galaxy, the closest major galaxy to the Milky Way, taken by NASA's Galaxy Evolution Explorer space telescope. Like our own galaxy, Andromeda is a spiral galaxy with a flat rotating disk of stars and gas and a concentrated bulge of stars at the center.

Streams of Stars Snaking Through the Galaxy Could Help Shine a Light on Dark Matter

When the Milky Way consumes another galaxy, tendrils of stellar streams survive the merger, containing clues about the universe's mysterious unseen matter

The SpaceX Crew Dragon spacecraft docked to the International Space Station.

After a Successful Test Flight to the International Space Station, SpaceX Looks Ahead to Launching Astronauts

SpaceX's new Crew Dragon spacecraft could launch the first astronauts from U.S. soil in almost a decade

Mars May Have Had a Planet-Wide System of Underground Lakes

A study of 24 craters shows they experienced the simultaneous rise and fall of groundwater, suggesting they were interconnected at one time

An artist's concept of the Beresheet lunar lander on the moon.

Israel's Private Lunar Lander Blasts Off for the Moon

The Israeli spacecraft Beresheet will gradually raise its orbit to reach the moon, landing after about a month and a half of flight

A mosaic of Mars images captured by the Viking Orbiter 1, which operated around the planet from 1976 to 1980. Valles Marineris, the largest canyon in the solar system, cuts across middle of the planet, stretching over 3,000 km long and up to 8 km deep.

With Opportunity Lost, NASA Confronts the Tenuous Future of Mars Exploration

Following decades of continuous flights to Mars, NASA is facing a shortage of missions

An artist's concept of the Mars Exploration Rover Opportunity superimposed on a photo of Victoria Crater, taken by the rover.

How NASA's Opportunity Rover Made Mars Part of Earth

After more than 15 years exploring the surface of Mars, the Opportunity rover has finally roved its last leg

An artist's rendering of the European Space Agency's Mars rover, scheduled for launch in 2020 and recently named after English chemist and X-ray crystallographer Rosalind Franklin.

Europe's 2020 Mars Rover Named for DNA Pioneer Rosalind Franklin

The U.K.-built vehicle is due to launch to the Red Planet next year

That's so metal.

Planetary Smash-Up May Have Produced This Distant Iron Exoplanet

Computer simulations suggest Kepler 107c could have been formed when two rocky planets collided, stripping it down to its metal core

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Astrophysicist Mercedes Lopez-Morales Is Grooming the Next Generation of Planet Hunters

"The Daily Show" correspondent Roy Wood, Jr. talks with the astrophysicist about adrenaline, fear, curiosity and attracting younger generations to science

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