A green glow in the martian night

When future astronauts explore Mars's polar regions, they will see a green glow lighting up the night sky. For the first time, a visible nightglow has been detected in the martian atmosphere by ESA's ExoMars mission.

Oxygen directly detected in Venus clouds

Researchers have made the first direct detection of atomic oxygen in the atmosphere of Venus. Some say it builds the case the planet was more hospitable in the past.

Uranus aurora discovery offers clues to habitable icy worlds

Astronomers confirm the existence of an infrared (IR) aurora on Uranus. This could help astronomers identify exoplanets that might support life, a large number of which are icy worlds.

Quakes on Mars Reveal We Were Wrong About Its Core

Two new papers show a 150 kilometer-thick layer of molten silicate rock at the base of the mantle envelopes Mars' liquid iron-alloy core.

Venus' ancient Earth-like plate tectonics

A recent study suggests that Venus, typically viewed as a fiery wasteland, may have experienced Earth-like plate tectonics in its distant past.

Webb pinpoints a high-speed jet stream on Jupiter

Researchers using the NASA/ESA/CSA James Webb Space Telescope's NIRCam (Near-Infrared Camera) have discovered a high-speed jet stream sitting over Jupiter's equator, above the main cloud decks.

Mysterious 'Singing' Plasma Waves Detected Around Mercury

So-called chorus waves have been recorded at Earth, and Jupiter, and Saturn; and observed at Uranus and Neptune. Now, international scientists have detected them whistling around Mercury.

Perseverance Captures a Beautifully Strange 'Blue Sunset' on Mars

Sunlight on Mars interacts with iron-rich dust that hangs in the atmosphere. This ultimately scatters lower-frequency red light through the sky during the day. At twilight, however, the red light is filtered away and the sky glows a cool blue.

Astronomers discover first step toward planet formation

Solving the mystery of how planets like Earth were formed is an important question for understanding the origin of life. 

Mercury is still getting smaller

Mercury has shrunk by7 km. Most of this happened long ago, but now we have evidence that it continues. 

Nasa's Perseverance produces breathable oxygen on Mars

Nasa's Perseverance rover has been able to generate 122g of breathable oxygen - enough to sustain a human for three hours on the Red Planet.

Mysterious Dark Vortex on Neptune Seen From Earth For First Time

Now, for the first time, we have observed a Neptune Storm with Earth-based instruments in unprecedented resolution.

"Megastorm" effects on Saturn last centuries

Megastorms occur approximately every 20 to 30 years on Saturn and are similar to hurricanes on Earth, although significantly larger. But unlike Earth’s hurricanes, no one knows what causes megastorms in Saturn’s atmosphere.

The clouds on Neptune disappeared

For the first time in nearly three decades of observations, clouds seen on Neptune have all but vanished. The observations reveal a connection between Neptune's disappearing clouds and the solar cycle.

Early Mars Had a Sustained, Cyclic, Possibly Seasonal, Climate

New observations of mud cracks made by NASA's Curiosity rover show that high-frequency, wet-dry cycling occurred in early Martian surface environments.