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Outer Space

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.

New Research

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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Ingenious Minds

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

Though the technological challenges for a future Mars mission are considerable, a proposal to "live off the land" using resources on the Red Planet might dramatically simplify exploration plans.

A Smithsonian Researcher Reflects on What It Will Take to Land Humans on Mars

In a new book on space exploration, Smithsonian curator emeritus Roger D. Launius predicts boots on the Red Planet ground by the 2030s

A Meteor Struck the Moon During Sunday’s Total Eclipse

It may be the first time that such an event was documented from Earth

New Research

We Finally Know How Long a Day on Saturn Is

By studying oscillations in the planet’s iconic rings, researchers have determined it takes Saturn 10 hours, 33 minutes and 38 seconds to rotate once

Yutu-2 sets off on its inaugural journey.

The Cotton Plant That Sprouted on the Far Side of the Moon Has Died

China, which is manning the first probe to land on the lunar far side, was hoping to find out how plants fare in outer space

Astronomers believe that in the distant future, trillions of years from now, new and exotic types of stars will form across the universe.

Four Types of Stars That Will Not Exist for Billions or Even Trillions of Years

According to models of stellar evolution, certain types of stars need longer than the universe has existed to form

Trending Today

Why the Nation of Georgia Wants to Make Wine on Mars

Researchers there are looking for grape varieties that can grow in Martian soil and survive high radiation and carbon monoxide

The artist's concept depicts a comet-like tail of a possible disintegrating super Mercury-size planet candidate as it transits its parent star named KIC 12557548. At an orbital distance of only twice the diameter of its star, the surface temperature of the potential planet is estimated to be a sweltering 3,300 degrees Fahrenheit.

Disintegrating Planets Could Be the Key to Discovering What Worlds Are Made Of

Exoplanets that have been ripped apart by their host stars could provide an opportunity to measure the minerals of the galaxy

New Research

Scientists Predict Sun Will One Day Turn Into Giant Crystal Ball

New observations of white dwarfs confirm theory that the star remnants transition into solid structures as they cool

Cool Finds

Planet Hunter TESS Is Already Spotting Hundreds of Crazy New Worlds

The first data from the space telescope’s mission tallies more than 200 potential planets, including some just 50 light-years away

A polarized-light microscopy image (in background) of a section from the Allende meteorite is one-thousandth of a millimeter thin.

The Oldest Material in the Smithsonian Institution Came From Outer Space

Decades after the Allende Meteorite plunged to Earth, scientists still mine its fragments for clues to the cosmos

This image taken by the Long-Range Reconnaissance Imager (LORRI) is the most detailed of Ultima Thule returned so far by the New Horizons spacecraft. It was taken at 5:01 Universal Time on January 1, 2019, just 30 minutes before closest approach from a range of 18,000 miles (28,000 kilometers), with an original scale of 730 feet (140 meters) per pixel.

Behold the Most Distant Object Ever Visited by Spacecraft

The New Horizons spacecraft has transmitted images from its New Year’s Day approach back to Earth

Remembering Nancy Grace Roman, Trailblazing Astronomer Known as ‘Mother of the Hubble’

She worked on and advocated for the space telescope, which changed our view of the universe

Artist’s impression of NASA’s New Horizons spacecraft encountering 2014 MU69, a Kuiper Belt object that orbits one billion miles (1.6 billion kilometers) beyond Pluto, on Jan. 1, 2019. With public input, the team has selected the nickname “Ultima Thule” for the object, which will be the most primitive and most distant world ever explored by spacecraft.

Ring in the New Year With NASA’s Most Distant Planetary Encounter in History

The New Horizons spacecraft is on final approach to the distant Kuiper Belt Object, Ultima Thule, and you can follow along live

1960s science fiction illustration of lunar exploration.

The Missions to the Moon That Never Left the Drawing Board

From pioneers of science fiction to the height of the space race, these are the ideas for lunar flight that never launched

An artist's conception of the view from Farout.

Cool Finds

Meet Farout, the Solar System’s Most Distant Minor Planet

Observations suggest the object is 300 miles in diameter, pinkish-red and 3.5 times as far away from the sun as Pluto

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