SUNSET: 
Did A Moon-Size Planet Grow Fast and Die Young in the Early Solar System?
A rare meteorite recovered from the Sahara Desert could be a fragment of a Moon-size body that met a violent end in the earliest days of the solar system.
Evidence of Water Plumes from Jupiter's Moon Europa Vanishes
Reanalysis shows that the Hubble Space Telescope's detection of water vapor escaping from Jupiter’s moon Europa might have been a glitch.
Nereid Could be Neptune’s Only Original Moon
New research suggests that Triton — or a Triton-like object — might have disrupted Neptune's original moon system. Nereid might be the sole survivor.
Sun-Observing Satellite Uses Artificial Eclipse to Capture the Solar Wind
The Proba 3 mission flies two spacecraft in precise formation to create an artificial eclipse and obtain close views of the solar wind as it leaves the Sun.
Rubin Observatory Announces 11,000 New Asteroids
The Vera C. Rubin Observatory will discover up to 500,000 solar system objects every year. It’s already starting to deliver on that promise.
Do the Moon’s Poles Hold Less Water Than We Thought?
New observations reveal that permanently shadowed regions at the lunar poles might contain less water ice than astronauts were hoping for.
Comet Break-Up Caught In Action
The Hubble Space Telescope caught a long-period comet breaking up just after it passed the Sun.
Hundreds of Bright Streaks Suggest Mercury’s Still Active
An AI search through decades-old spacecraft images reveals that Mercury may still be alive and kicking, geologically speaking.
Scientists Measure Mars's Effect on Earth's Climate
Tiny Mars might have an outsize effect on Earth's climate over hundreds of thousands of years.
Native American Full Moon Names for 2026
Native American tribes each had their own full Moon names — we introduce the most commonly used ones and the traditions behind them.
New Radar Data Chills Prospects of a Subglacial Lake on Mars
There could be liquid water trapped under the southern polar cap of Mars. But new observations suggest otherwise.
Tiny Sparks of Lightning Detected on Mars for the First Time
The microphone on NASA's Perseverance rover unexpectedly heard tiny claps of thunder from sparks caused by colliding dust grains.
New Images Reveal Exocomets Around 74 Nearby Stars
Researchers have unveiled new images of 74 nearby stars surrounded by belts of small, comet-size bodies, not unlike our own Kuiper Belt.
Magic in the Air
Astronomers are building an array of intriguing telescopes that will enable them to detect the highest-energy gamma rays — from the ground.
Short-lived Experiment Marks Start of Radio Astronomy from the Moon
Despite a mission glitch, NASA’s lunar radio experiment ROLSES (carried to the Moon on the Odyssesus lander in February) obtained a unique "view" of Earth.
A Cosmic Arrow Pierced Pluto's Heart — Is It Still There Beneath the Surface?
A giant impact likely formed Pluto's heart-shaped basin, Sputnik Planitia. A big chunk of the impactor’s core might still be buried under the ice.
Meteorites Tighten Timeline for Giant Planets’ Movement through the Solar System
By linking a family of meteorites on Earth to their relatives in the asteroid belt, scientists have arrived at a new understanding of the giant planets' movement early in the solar system's history.
Giant Ancient Volcano Discovered on Mars
Scientists have identified a colossal volcano on Mars using satellite imagery. It was undetected for decades due to extensive erosion.
Icy Impactor Might Explain the Formation of Mars’s Moons
In a new study, scientists suggest an impact with a giant icy object could explain the formation of Mars's moons, Phobos and Deimos.
Methane Icebergs Could Float in Titan’s Seas
The “magic islands” that appear and disappear in Titan’s methane-ethane seas could be hydrocarbon icebergs, a new study finds.
