The Solar System

City-size comet headed toward Earth 'grows horns' after massive volcanic eruption

Updated: 2023-07-31 00:00:14

The exploding comet, known as 12P/Pons–Brooks, is currently approaching its closest point to Earth during its 71-year orbit through the solar system.

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New satellite will able to see 'X-ray rainbow' from huge objects in space

Updated: 2023-07-30 00:00:00

A satellite called XRISM will use X-ray detection instruments to probe the high-energy universe like never before. Both NASA and Japan are involved in the mission.

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Aquatic equivalencies

Updated: 2023-07-28 14:30:00

From searching for life to training for spaceflight, water is an essential part of space exploration.

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Life on Venus: Your Questions Answered

Updated: 2023-07-28 14:30:00

Is there life on Venus? Was our planetary neighbor ever inhabited? Here are the answers to your most pressing questions about the possibility of alien life on Venus.

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That’s a mare

Updated: 2023-07-21 14:30:00

An unusual lunar feature, Saturn’s shining rings, and Mars’ complex gullies.

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Speedy spacecraft and pretty pics

Updated: 2023-07-14 14:30:00

Take a look at some of our favorite recent space images and learn about an express mission to Mars.

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Advocacy Action Center

Updated: 2023-07-10 14:49:00

The Planetary Society is organizing a new space constituency that is educated, empowered, and loud.

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Searching the skies to keep us all alive

Updated: 2023-06-30 14:30:00

Astronomers around the world are working to protect the Earth from asteroid impacts, with the help of Planetary Society members and donors.

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Announcing the 2023 Shoemaker NEO grant winners

Updated: 2023-06-26 14:30:00

Meet the latest round of winners in The Planetary Society's Shoemaker Near-Earth Object (NEO) grant program, which funds astronomers around the world in their efforts to find, track, and characterize near-Earth asteroids.

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Rings and dings

Updated: 2023-06-23 14:30:00

From Saturn’s magnificent rings to Mercury’s surface dings, this week brings great new images and science from across the Solar System.

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Day and night, it’s all about starlight

Updated: 2023-06-16 14:30:00

This week in space: Mars days almost match up with ours, and light and molecules are created by distant stars.

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Vladimir Benishek and the mystique of asteroid research

Updated: 2023-06-15 14:30:00

The Planetary Society Shoemaker NEO Grant winner learned from his mother and grandfather, while also forging his own path.

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Your impact: June solstice 2023

Updated: 2023-06-12 15:00:00

Meet our second round of STEP Grant winners!

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Day of Action 2023 - Participant Information

Updated: 2023-06-12 14:00:00

Information for registered participants of The Planetary Society's 2023 Day of Action.

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The scientific truth is out there

Updated: 2023-06-09 14:30:00

The real science of aliens, the policy implications of ET, and new views of worlds beyond our own.

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Would you like some salty water with your space salad?

Updated: 2023-06-02 14:30:00

Two new grant-winning projects, a collection of awesome space imagery, a mighty plume, and much more this week in space.

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Way out there

Updated: 2023-05-26 14:30:00

We’re always learning more about the worlds of the outer Solar System, and even those beyond.

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Five asteroid deflection techniques to save the Earth

Updated: 2023-05-23 14:30:00

Kinetic impactor or nuclear blast? Here are some ways to defend our planet from a dangerous asteroid.

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Moon-spying missions and a planetary evil twin

Updated: 2023-05-19 14:30:00

Whether they’re dedicated to it or not, planetary missions can get beautiful and informative glimpses at distant moons. And who’s the evil twin: Venus or Earth?

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Hard-working spacecraft and even harder-working microbes

Updated: 2023-05-12 14:30:00

The Soyuz spacecraft have been helping humans get to and from space for decades, but that’s nothing compared to the billions of years that microorganisms have been making life on Earth possible.

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How did Earth get its oxygen?

Updated: 2023-05-11 07:00:00

A tiny, Sun-loving microbe has made a very big impact on our atmosphere.

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Moonshadow, Moonshadow

Updated: 2023-05-05 14:30:00

The Moon casts shadows on itself and on Earth, environmental concerns overshadow a test launch’s success, and exoplanets are awesome (beyond a shadow of a doubt).

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Have a nice flight!

Updated: 2023-04-28 14:30:00

Flying on Titan is easy, but not as easy as flying on Deimos. Plus, Juice takes off and Ingenuity captures a view from the air.

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The phases of the Moon explained

Updated: 2023-04-25 15:30:00

Your guide to the phases of the Moon, their names, and why they happen.

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Rocket flight and the five dwarfs

Updated: 2023-04-21 14:30:00

Meet the Solar System’s five official dwarf planets, celebrate two major launches, and find out why planets sometimes seem to go backwards across the sky.

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SpaceX's Starship test flight succeeds despite not reaching orbit

Updated: 2023-04-20 17:00:00

The test flight succeeded in its goal of having the two vehicles clear the launch tower, although they exploded before reaching orbit.

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So What Exactly was that Light in the Sky?

Updated: 2023-04-20 16:47:53

Kyiv “Flash” Light (April 19, 2023) This single frame (image capture) shows the precise

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2023 Digital Day of Action recap

Updated: 2023-04-20 15:00:00

The Planetary Society's all-virtual advocacy event was a success, with more than 1,500 advocacy actions taken.

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What does “Mercury in retrograde” actually mean?

Updated: 2023-04-19 17:30:00

"Mercury in retrograde" is one of the most searched terms relating to the planet. Astrological interpretations aside, apparent retrograde motion is an interesting phenomenon that has to do with orbital speeds and observer perspective.

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Meet the Solar System's five official dwarf planets

Updated: 2023-04-19 14:00:00

The International Astronomical Union currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris.

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Want more space? Speak up!

Updated: 2023-04-14 14:30:00

Detailed Mars maps, insights into the Venusian surface, and views of Uranian rings all have one thing in common: they don’t happen without public support for space.

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Juice launches on mission to explore Jupiter's icy moons

Updated: 2023-04-14 13:38:00

The spacecraft will explore Jupiter's moons Europa, Ganymede, and Callisto, all three of which may harbor subsurface oceans.

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What would it be like to stand on the surface of Venus?

Updated: 2023-04-11 14:38:00

With extreme heat and crushing atmospheric pressure, the surface of Venus is one of the most deadly environments in the Solar System. Here’s what it would be like to be there.

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A mission to pull back the shroud

Updated: 2023-04-07 14:30:00

VERITAS would peer through Venus’ clouds to study its surface like never before, but it needs your help.

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Juice launch and mission preview: What to expect

Updated: 2023-04-06 14:30:00

Juice is ready to launch on a mission to uncover the secrets of Jupiter's icy moons.

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Why we need VERITAS

Updated: 2023-04-05 14:20:00

NASA's first mission to Venus in decades is in danger. This is why VERITAS is worth saving.

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The Planetary Society, American Geophysical Union, and Prominent Academic Institutions Call on Congress to Save VERITAS Mission to Venus

Updated: 2023-04-05 14:20:00

In a joint effort led by The Planetary Society, major organizations and academic institutions are calling on Congress to save the Venus Emissivity, Radio science, InSAR, Topography And Spectroscopy (VERITAS) mission by establishing a 2029 launch date, a 2-year delay from the original baseline schedule.

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