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Solar System

The first-ever archaeology experiment in space is being conducted on the International Space Station.

First-Ever Archaeological Project Studies How Astronauts Adapt to Their Environments

Researchers on Earth, partnering with those on the International Space Station, are taking a novel approach to understanding the ways humans live in space

Stargazers watch Comet Neowise shoot across the sky on July 19, 2020 outside of Los Angeles, California.

Ten Dazzling Celestial Events to See in 2022

Stargazers in North America can look forward to meteor showers, lunar eclipses and a stunning multi-planet lineup this year

Using data and data visualization software that mapped the asymmetrical bubble, the research team calculated that at least 15 supernovae have gone off over millions of years and pushed gas outward, creating a bubble where seven star-forming regions dot the surface.  

A Star-Producing, Cosmic Bubble Shrouds Our Solar System

Researchers created a 3-D model of Earth’s galactic neighborhood

Jovian moon Ganymede, is the only moon known to have a magnetic field. On its most recent flyby of the moon, the JunoCam imager on NASA's Juno spacecraft snapped the most detailed images of Ganymede on June 7, 2021.  

Jupiter’s Moon Ganymede Sounds Like Dial-Up Internet

The 50-second audio track was pieced together from data collected by NASA’s Juno Spacecraft

Since the Parker Solar Probe launched in 2018, it's been orbiting the sun and inching closer with every loop.

For the First Time Ever, a NASA Spacecraft Has ‘Touched’ the Sun

The Parker Solar Probe reached the sun’s upper atmosphere, gathering data along the way to help scientists better understand the center of our solar system

NASA’s Hubble Space Telescope snapped this picture of the Centaur LD2 as it orbited near Jupiter.

The Ambitious Idea to Study the Evolution of a Comet

Researchers want to send a spacecraft near Jupiter to join up with a chunk of rock and ice as it’s flung toward the sun

People lie on the ground to view the Perseid meteor shower in Rocky Mountain National Park in Colorado at an astronomy night event on August 12, 2018.

How to Watch the Perseid Meteor Shower

Known for its ‘fireball’ meteors, the Perseid shower began on July 14 and will peak in mid-August

The bright red regions were thought to be caused by molecules known as tholins, or organic compounds that rain down onto the surface after cosmic rays or ultraviolet light interact with the methane in Pluto's surface and atmosphere.

Pluto’s Red Patches Are Mystifying Scientists

A new study suggests there’s more to the dwarf planet’s rust-colored deposits than meets the eye

It’s considered one of the coldest and smallest exoplanets discovered so far.

This Neptune-Like Exoplanet May Have Water Clouds

Despite the possible presence of water vapor, TOI-1231 b is likely not habitable because of its size

Streaked across Ganymede's surface are bright light-colored regions of ridges and grooves that overlap darker-colored terrains along the icy shell. The textured scar-like areas suggest that the moon's surface underwent extreme geologic changes over time.

NASA’s Juno Space Probe Zooms by Largest Moon in the Solar System

The flyby will be the closest any spacecraft has flown near Ganymede in over two decades

In the images, the Great Red Spot, Jupiter's superstorm, is seen in both visible and ultraviolet light, but it disappears into the background as a black splotch in the infrared image.

Peer Into Jupiter’s Gassy Atmosphere With These Stunning New Photos

The images taken at various wavelengths reveal details about the gas giant’s stormy atmosphere

Using the detected radio wave, Collinson and his team calculated the density of Venus' ionosphere and compared it to measurements taken back in 1992 using the Pioneer Venus Orbiter.

NASA’s Parker Solar Probe Measures Radio Signal in Venus’ Upper Atmosphere

The measurements help researchers understand how the planet’s ionosphere began leaking

The pink splotch on the planet shows the X-rays detected in 2002 imposed on a photo of Uranus taken in 2004 at the same orientation.

Scientists Detect X-Rays Radiating From Uranus

The beams could be scattered light from the Sun, fluorescence from Uranus’s rings, or produced by auroras on the ice giant

NASA's latest image of Venus taken by the Parker Solar Probe. Using Venus's gravity, the Parker Probe will circle our host star seven times while getting closer and closer over the course of seven years.

NASA’s Parker Solar Probe Snaps Luminous Photo of Venus

The image revealed unknown capabilities of the imaging instrument, WISPR, aboard the Parker Solar Probe and more insight into the planet’s atmosphere

The Navigation Cameras on Perseverance capture an image of the rover's deck.

Exploring Mars

How to Keep Up With NASA’s Perseverance Rover as It Explores Mars

Follow along as the new rover sends incredible data and images back to Earth

The orbits of the Extreme Trans-Neptunian Objects (ETNOs) were tilted and elongated towards the sun, leading researchers to suspect the ETNOs were bunched together because of Planet Nine's gravitational pull.

New Study Knocks Theory of Planet Nine’s Existence Out of Orbit

It was previously thought the object’s gravitational pull was responsible for the strange orbits of six dwarf planets that whiz beyond Neptune

Published in Scientific Reports, the new study by astronomers Amir Siraj and Avi Loeb of the Harvard-Smithsonian Center for Astrophysics, propose that a series of break-ups and chance events sent the huge chunk of space rock our way.

Astrophysicists Chart Source of Asteroid That Killed Dinosaurs

A new model explains a possible route for the extraterrestrial rock before it blasted Earth

The photograph shows an area about 10,000 miles wide, a small portion of the Sun which is 864,000 miles wide

Brilliant Sunspot Photo Captures the Beginning of a New Solar Cycle

The Inouye Solar Telescope captured the unprecedentedly detailed image of a 3,700-mile-wide sunspot on January 28

This year's top ten titles explore the cosmos, fear and cleanliness alongside narratives about owls, fish and eels.

The Ten Best Science Books of 2020

New titles explore the mysterious lives of eels, the science of fear and our connections to the stars

The planets in our solar system all orbit the Sun in one shared plane.

Ask Smithsonian

Why Do the Planets All Orbit the Sun in the Same Plane?

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