Venus May Have Once Had Oceans Across 90% of Its Hot, Dry Surface

Now, a new study argues the surface of Venus may still bear the geological scars of those long-lost seas. 

Europa’s Ice Shell May Be Tougher Barrier than Expected

A new research suggests reaching Europa's subsurface ocean — or even glimpsing evidence of it near the icy surface — may be far harder than expected.

Giant rings in Venus's atmosphere uncovered in archived observations

In 2010, scientists waiting to use the William Herschel Telescope in the Canary Islands captured a brief 36 minutes of images of Venus. What they discovered, hidden in the data, was a series of planetwide concentric rings in the upper atmosphere. 

Milky Way’s galactic spiral arms helped form Earth’s first continents

A new study indicates that the formation of Earth’s crust goes through cycles, with periods of increased crust production roughly every 200 million years, corresponding to the solar system’s transit through the spiral arms of the Milky Way.

NASA's Perseverance just completed a marathon on Mars

NASA's Perseverance rover has reached an impressive new milestone on Mars, completing the equivalent of a full marathon by driving 42.195 kilometers across the Red Planet. 

Titan and Pluto exhibit the same mysterious spectral feature

Recently, a team of scientists identified an absorption line coming from Saturn's moons Titan and Pluto that has not yet been seen anywhere else.

Solar System Once Had A Fifth Giant Planet

Our Solar System may once have hosted not two, but three ice giants. This long-lost world could help explain why the outer planets and their moons look the way they do today.

Meteorite Found in Africa Preserves Evidence of Long-Lost Massive Protoplanet

The Northwest Africa (NWA) 12774, an angrite meteorite, appears to be a fragment of a vanished protoplanet, offering the strongest evidence yet that a large planetary body formed and was later destroyed during the Solar System’s chaotic infancy.

Waterworn chaos on Mars

Shalbatana Vallis is an impressive channel near Mars’s equator. It is 1300 km in length - around the length of Italy. Formed formed around 3.5 billion years ago, when huge quantities of groundwater rose up to Mars’s surface.

Neptune's moon Nereid may be original survivor of Triton's arrival

Observations suggest that Nereid is no party crasher like Triton and likely survived by escaping into its extreme, elliptical orbit around Neptune.

Stardust in Antarctica shows Earth crossed a supernova cloud

Our solar system has been moving through the local interstellar cloud, left by a supernova, for over past 80,000 years.

Tiny world with an atmosphere in outer solar system

Astronomers have spotted a tiny world with an atmosphere beyond the orbit of Neptune. It should be too small for an atmosphere to be possible.

Venus Has A Giant Volcanic Cave Beneath Its Surface

A team of astronomers have discovered a giant volcanic cave hiding beneath the surface of Venus.

Interstellar Comet 3I/ATLAS Has Cold, Ancient Origins

The most recent interstellar visitor was crisscrossing our galaxy for some 10 to 12 billion years before it came near the Sun.

NASA’s Curiosity Finds Organic Molecules Never Seen Before on Mars

A NASA rover has discovered more building blocks of life on Mars after carrying out a chemistry experiment never before conducted on another planet.