Skip to main content

Subscribe to Smithsonian magazine and get a FREE tote.

Outer Space

Based on the speed and trajectory of a newly detected object, astronomers believe it came to our solar system from beyond. This illustration shows the first known interstellar object to fly though our solar system, 'Oumuamua.

Astronomers Spot a Comet That Likely Came From a Different Solar System

After ‘Oumuamua, the newly detected rock is just the second known object to visit from interstellar space

The Harvest moon is the full moon each year that falls closest to the autumnal equinox.

A Rare Harvest ‘Micromoon’ Will Light Up the Sky on Friday the 13th

The United States hasn’t experienced a nation-wide full moon on this superstitious date since 2000

NASA astronaut Serena Auñón-Chancellor mixes cement samples for the MICS mission aboard the International Space Station.

New Research

Why Astronauts Are Mixing Cement Aboard the International Space Station

Experiments show that cement will set in space, but moon colonists may have to tweak the mixture to make it work in low gravity

An artist's illustration of the planet K2-18b and another planet, K2-18c, that orbits closer to the parent star. Both planets orbit a red dwarf about 110 light-years from Earth in the constellation Leo.

Water Vapor Detected in the Atmosphere of an Exoplanet in the Habitable Zone

The planet K2-18b, about 110 light-years away, could have swirling clouds and falling rains of liquid water droplets

The moon lander Vikram in the foreground and the orbiter Chandrayaan- in the background during preparation of the spacecraft for launch, June 10, 2019.

India Locates Lost Lunar Lander but Struggles to Reestablish Contact

The Vikram spacecraft went offline minutes before it was scheduled to touch down near the south pole of the moon

Trending Today

Astronomers Name Five of Jupiter’s New Moons

A contest earlier this year helped determine the names of the new moons—all named after lovers or offspring of the god Jupiter, aka Zeus

A natural color view of Titan and Saturn taken by NASA's Cassini spacecraft wide-angle camera on May 6, 2012, at a distance of approximately 483,000 miles (778,000 kilometers) from Titan.

Dragonfly Spacecraft to Scour the Sands of Titan for the Chemistry of Life

The NASA rotorcraft, resembling a large quadcopter drone, will fly through the orange clouds of the ocean moon in the outer solar system

Astronauts Bob Behnken and Doug Hurley assigned to first SpaceX crewed launch test out their new space suits.

Future of Space Exploration

Astronauts Test Out Their Sleek New SpaceX Flight Suits

The SpaceX designed pressure suits are more form fitting and maneuverable than the Space Shuttle’s orange suits

Trending Today

A Crashed Spacecraft Might Have Put Earth’s Most Indestructible Organisms on the Moon

The microscopic tardigrades were part of a lunar library sent aboard the Beresheet lander that crashed last April

New Research

New 3-D Map Shows Milky Way’s Big Twist

By mapping the distance of Cepheid stars, researchers reveal that our galaxy is warped

An artist's depiction of Earth during the Archean Eon, from 4 to 2.5 billion years ago, when life consisted of only single-celled microbes with no nucleus (prokaryotes). How these primitive organisms first formed from chemical reactions remains one of the greatest mysteries of science.

Future of Space Exploration

Searching for the Key to Life’s Beginnings

From exoplanets to chemical reactions, scientists inch closer to solving the great mystery of how life forms from inanimate matter

Csilla Ari D’Agostino sits in front of the Aquarius habitat and uses a waterproof iPad for cognitive tests as part of her research on NEEMO 23.

Future of Space Exploration

NASA Scientists and Astronauts Practice for Space Missions on the Seafloor

A female-led crew trained for nine days in an undersea laboratory in the Atlantic to get a sense of what it’s like to live and work in microgravity

An artist's visualization of the star S0-2 as it passes by the supermassive black hole at the galactic center. As the star gets closer to the supermassive black hole, it experiences a gravitational redshift that is predicted by Einstein's general relativity. By observing this redshift, we can test Einstein's theory of gravity.

Future of Space Exploration

A Star Orbiting in the Extreme Gravity of a Black Hole Validates General Relativity

The star S0-2 gets so close to the supermassive black hole at the center of the galaxy that it can be used to test our fundamental understanding of gravity

A rendering of the 363-foot Saturn V projection

Future of Space Exploration

Watch the Apollo 11 Anniversary Show That Was Projected Onto the Washington Monument

The immersive experience combined full-motion projection-mapping artwork and archival footage

Ice at the Martian pole. The dark spots are pockets of warming under the ice.

Future of Space Exploration

This Material May Make Human Habitation on Mars Possible

Silica aerogel traps heat and allows light in while blocking ultraviolet radiation, making it a good candidate for building human settlements

Neil Armstrong (left) and Buzz Aldrin (right) document a sample during a field trip at Sierra Blanca in west Texas on February 24, 1969.

Future of Space Exploration

Before Going to the Moon, Apollo 11 Astronauts Trained at These Five Sites

From Arizona to Hawaii, these landscapes—similar in ways to the surface of the moon—were critical training grounds for the crew

In 2019, 50 years after the Apollo 11 moon landing, Neil Armstrong’s spacesuit stands as one of the most significant artifacts in the world.

Apollo at 50: We Choose to Go to the Moon

Neil Armstrong’s Restored Spacesuit Put Back on Display at the Smithsonian’s National Air and Space Museum

The spacesuit, which Armstrong wore when he walked on the moon during Apollo 11, is available for public viewing and as a 3-D model online

Apollo 11 astronaut Buzz Aldrin works at the deployed Passive Seismic Experiment Package on July 20, 1969. To the left of the United States flag in the background is the lunar surface television camera.

Apollo at 50: We Choose to Go to the Moon

The Best Books About the Apollo Program and Landing on the Moon

From astronaut autobiographies to definitive accounts from leading historians, these are the must reads about the landmark mission

Future of Space Exploration

First Moon-Forming Disk Detected Swirling Around an Exoplanet

Telescope observations suggest that a cloud of gas and dust around a planet 370 light-years away may be coalescing into planet-sized moons

Apollo at 50: We Choose to Go to the Moon

Restored Apollo Mission Control Center Brings the Moon Landing Era to Life

Decommissioned in 1992, the site is now open to public tours

Page 46 of 88