Outer Space

On December 28, 2019, Christina Koch broke the record for the longest single spaceflight by a woman, according to NASA.

Astronaut Christina Koch Breaks Record for Longest Spaceflight by a Woman

By the end of her mission in February, Koch will have spent 328 days in space

These are ten of the biggest strides made by scientists in the last ten years.

The Top Ten Scientific Discoveries of the Decade

Breakthroughs include measuring the true nature of the universe, finding new species of human ancestors, and unlocking new ways to fight disease

The Quadrantids meteor shower, though fleeting, is famous for its especially bright, colorful "fireballs"

How to Catch the Quadrantids, the First Major Meteor Shower of the 2020s

This cosmic light show will peak in the predawn hours of January 4

Scientists seeking extraterrestrial life in the universe (above: a radio observatory in New Mexico) seek the answer to what is called the Fermi paradox: “Where is everybody?”

If Aliens Existed Elsewhere in the Universe, How Would They Behave?

In a new offering from Smithsonian Books, James Trefil and Michael Summers explore the life forms that might exist on a dizzying array of exoplanets

The moon moves in front of the sun in a rare "ring of fire" solar eclipse as seen from Tanjung Piai, Malaysia on December 26, 2019.

A 'Ring of Fire' Eclipse Dazzled Viewers in Asia and the Middle East

This celestial event occurs when the moon is near its farthest point from Earth, allowing the blazing edges of the sun to shine around the edges

The star Betelgeuse, as seen by the Atacama Large Millimeter/submillimeter Array.

A Giant Star Is Dimming, Which Could Be a Sign It Is About to Explode

Most astronomers, however, say it's unlikely that the star Betelgeuse will go supernova anytime soon

An artist impression of Cheops, the CHaracterising ExOPlanet Satellite, with an exoplanet system in the background

Three Things to Know About Europe's New Exoplanet Space Telescope

CHEOPS is the first exoplanet satellite devoted specifically to learning more about the thousands of planets we have already found

The Ten Best Science Books of 2019

New titles explore the workings of the human body, the lives of animals big and small, the past and future of planet earth and how it's all connected

NASA's Sun-Orbiting Probe Reveals New Secrets of Our Host Star

The first findings from the Parker Solar Probe change what we know about the workings of our nearest star

An amateur astronomer in India doggedly searched for the remnants of the country's Vikram lander after it crashed into the lunar south pole.

Amateur Astronomer Locates India's Moon Lander Crash Site

After blipping out of contact in September, India’s Vikram lander has now been found strewn across the lunar surface

After DART smashes into an asteroid, the Hera spacecraft will analyze the impact.

A Spacecraft Will Follow NASA's Asteroid-Smashing Mission to Measure the Effects of the Impact

The European Space Agency's Hera mission will collect data after NASA's DART mission impacts the asteroid Didymos B

Students and teachers can download 3-D print-ready files of the Tyrannosaurus rex and Triceratops skulls.

Ten Smithsonian Artifacts You Can 3-D Print

The list includes Neil Armstrong’s spacesuit, an Abraham Lincoln life mask and a coral skeleton

Jupiter and its Great Red Spot as seen by the Hubble Telescope on June 27, 2019.

Jupiter's Great Red Spot May Not Be Dying Out Just Yet

Earlier this year, the spot appeared to be losing big chunks, but new research suggests it was gobbling up a smaller storm

First Global Map of Saturn's Moon Titan Reveals Secrets of Earth's 'Deranged' Twin

The map showcases the planet's flat plains, sand dunes, hilly terrain and lakes full of liquid methane

An artist's concept showing a "naked-eye" view of a GRB up close. Observations suggest that material is shot outward in a two-component jet (white and green beams). Credit: NASA/Swift/Mary Pat Hrybyk-Keith and John Jones

Astronomers Detect Record-Breaking Gamma Ray Bursts From Colossal Explosion in Space

A powerful outburst in a distant galaxy produced photons with high enough energies to be detected by ground-based telescopes for the first time

Left to right, top to bottom: Sheperd Doeleman, Michael Johnson, Sandra Bustamante, Jonathan Weintroub, James Moran, Aleks Popstefanija, Daniel Palumbo; Feryal Ozel, Joseph Farah, Neil Erickson, Peter Galison, Katie Bouman, Dominic Pesce, Garrett K. Keating; Nimesh Patel, Alexander Raymond, Kazinori Akiyama, Vernon Fath, Mark Gurwell, Gopal Narayanan, Peter Schloerb

Meet the Global Team That Captured the First Image of a Black Hole

Never before had scientists seen the phenomenon until they rallied colleagues around the world to view a galaxy far, far away

The thread-like structures in this image from the Japanese satellite Hinode are spicules, giant plumes of gas that transfer energy through the sun’s various regions.

Millions of Plasma 'Spicules' Could Explain the Extreme Heat of the Sun's Atmosphere

New observations suggest interactions between opposite magnetic fields cause millions of super hot tendrils to erupt from the surface of the sun

NASA Names Most Distant Object Ever Explored 'Arrokoth,' the Powhatan Word for Sky

The space rock's initial nickname, Ultima Thule, drew criticism for its ties to Nazi ideology

The recently opened Apollo moon sample.

NASA Opens Pristine Tube of Moon Dust From the Apollo Missions

Studying the lunar material will help scientists understand the best way to analyze new samples from future missions to the moon

A composite image of Mercury's 2016 transit.

How to Watch Mercury’s Rare Transit Across the Sun

Step one: Protect your eyes

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