41–60 of 859 results
Chaotic, Jupiter-like orbit

Solar System

Jupiter Has Trapped a Comet in a Bizarre Orbit

Jupiter has captured an icy comet from the outer solar system. The comet's bizarre orbit will bring it back for another super-close pass in 2063.

composite image of Ryugu's rubbly surface

Spacecraft and Space Missions

Ryugu May Have Skirted Close to the Sun

Observations by the Japanese Hayabusa 2 spacecraft show subtle color differences, indicating something has reddened the asteroid’s surface.

Mars: dry vs. wet

Solar System

Weak Martian Magnetic Field May Have Let Air Out

Mars's magnetic field weakened and disappeared billions of years ago. Now, scientists have found that the weak field might have been worse than none at all.

The Sun vs. Sun-like Stars

Stellar Science

How Lazy Is the Sun?

Astronomers studying hundreds of Sun-like stars were surprised to find that most of them are more active than the Sun. Why is the Sun different?

Neptune, raw and processed

Pro-Am Collaboration

Explore Solar System Worlds with NASA’s Image Archives

Have some time on your hands? Explore NASA's rich image archive and discover the solar system as you've never seen it before.

USGS Geologic Map of the Moon

Solar System

New, Incredibly Detailed Geologic Map of the Moon

The U.S. Geological Survey (USGS) has released a new 1:5,000,000 map of the Moon that provides a wealth of information about its surface.

Pluto atmosphere

Solar System

Did Pluto Harbor an Ancient Subsurface Ocean?

New studies shed light on the early years of Pluto's formation, and whether it ever hosted a subsurface ocean.

Comet 2I/Borisov

Solar System

The Origins of Interstellar Objects

The first two interstellar visitors to the solar system are finally shedding light on their places of origin.

Mini-moon discovered

Solar System

Is Earth's Minimoon Still Here?

Reports of the loss of Earth's minimoon may have been somewhat exaggerated — new research suggests the moonlet will leave Earth orbit in early may.

Comet Borisov

Solar System

Is the Interstellar Comet 2I/Borisov Breaking Up?

New observations of the interstellar comet — which traveled unaltered for eons before arriving in the solar system — have revealed it's fragmenting

Chaotic terrain on Mercury

Solar System

Why Have Parts of Mercury's Landscape "Deflated"?

A type of landscape on Mercury known as “chaotic terrain” might have released materials stored underground for eons.

Perseverance

Astronomy in Space with David Dickinson

NASA Announces Next Mars Rover Name: Perseverance

NASA announced today that its next Mars rover mission now has its official name: Perseverance.

Mini-moon discovered

Explore the Night with Bob King

Earth Has A Mini-Moon — But Not for Long!

Two astronomers discovered a temporary mini-moon captured by Earth — but it's about to win its freedom.

Yutu 2's view

Solar System

What Lies Beneath the Moon's Farside?

The Chang’e 4 mission made the first-ever landing on the farside of the Moon last year — now it’s providing a look at what lies below its surface.

Insight lander on Mars

Spacecraft and Space Missions

NASA’s Insight Detects Many Marsquakes on the Red Planet

Persistent tremors on Mars suggest the planet’s interior is cooling and hint that there might be a pocket of magma beneath the surface.

Solar System

New Horizons Reveals Full Picture of Arrokoth...and How Planets Form

New Horizon’s flyby of Arrokoth, a planetesimal in the Kuiper Belt, reveals a pristine object untouched since the solar system’s origin. Its shape and geology show that planetesimals form more gently than previously thought.

Parker Solar Probe

Solar System

Parker Solar Probe Releases New Details on Solar Wind

Scientists release a bevy of results from the Parker Solar Probe's first two passes near the Sun, including new details on so-called "rogue waves" in the solar wind.

Comet Borisov

Solar System

A Detailed View of Our Second Interstellar Visitor

What do we know about the second object to visit us from another stellar system? Detailed Hubble images have given us plenty to consider!

Solar Orbiter

Solar System

New Solar Orbiter Mission Launches Successfully

The Solar Orbiter mission took to the skies Sunday evening and will join ongoing efforts to understand our host star.

Beating heart on Pluto

Solar System

Pluto's Icy Heart "Beats," Driving Planet-Scale Winds

New computer simulations suggest that the "beating" of Pluto's frozen heart drives weak winds on this remote world in the outer solar system.

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