Space | EarthSky

Could there be alien tech on the moon? Scientists propose a new search for microscopic particles shed by alien technology. The post Alien tech on the moon? Scientists propose search for microscopic debris first appeared on EarthSky .

Did the sun swallow a planet early in its history? Models show a super-Earth might have spiraled into the sun and left a fingerprint we can still see today. The post Did the sun swallow a planet early in its history? first appeared on EarthSky .

Astronomers have found the most distant proto-supercluster yet, an early collection of galaxies at a junction in the cosmic web. The post Distant proto-supercluster! An early intersection point in the cosmic web? first appeared on EarthSky .

If black holes have extra matter around them - aka hidden hair - astronomers could find it by measuring the different characteristics of these ripples. The post Do black holes have hidden hair? Scientists are searching first appeared on EarthSky .

A new study from MIT shows that peptides in Venus' clouds could survive in the sulfuric acid droplets and fold into the shapes need for biological life. The post Peptides in Venus’ clouds could form life-giving shapes first appeared on EarthSky .

A small asteroid impact will occur in the next few hours near NW Australia. The meteor should harmlessly burn up in Earth's atmosphere and poses no danger. The post Small asteroid impact today over the ocean near Australia first appeared on EarthSky .

A new study from Caltech shows that Mars' southern hemisphere is much hotter than expected deep below the surface. Why is that? The post Mars’ southern hemisphere is unusually hot deep underground first appeared on EarthSky .

Saturn’s south pole is now known to have a giant, evolving 10-sided wave, similar to the Saturn north pole hexagon. Read more about it here. The post Saturn’s south pole decagon confirmed! A mysterious 10-sided figure first appeared on EarthSky .

The BepiColombo mission has been maneuvering its way into orbit around Mercury for 8 years. On September 3, it will release 2 orbiters in Mercury orbit. The post BepiColombo mission 1 step closer to Mercury today first appeared on EarthSky .

Astronomers have discovered a new giant mega-Earth exoplanet that is a whopping 23 times as massive as Earth, and 2.5 times the size. The post Giant mega-Earth is 23 times more massive than Earth first appeared on EarthSky .

On the 50th anniversary of the launch of Pioneer 10, Patty Winter recalls the day that Pioneer 11 passed the rings of Saturn. The post Pioneer 11: Watching the Saturn watchers first appeared on EarthSky .

A new study from researchers at Stanford University helps explain how hot lava-world exoplanets orbiting close to their stars can maintain their atmospheres. The post How do lava-world exoplanets keep their atmospheres? first appeared on EarthSky .

TOI-199b is a warm Saturn-sized exoplanet 330 light-years away. New observations by the Webb space telescope show there is methane in its atmosphere. The post Meet a Saturn-sized exoplanet with Earth-like temperatures first appeared on EarthSky .

A new study of huge rift valleys on Venus shows that they are likely younger than previously thought, and might still be geologically active today. The post Huge rift valleys on Venus hint at a still-living planet first appeared on EarthSky .

Astronomers have discovered the fastest star in the galaxy. It orbits the supermassive black hole at the center of our galaxy and could reveal its spin. The post Fastest star in the galaxy could unlock black hole secrets first appeared on EarthSky .

A previously overlooked photo from the Curiosity rover shows an odd 'jellyfish' on Mars. Is it a real anomaly or an imaging artifact? The post ‘Jellyfish’ on Mars: Image from Curiosity rover goes viral first appeared on EarthSky .

Is life in helium atmospheres on exoplanets possible? A new study says that there are no barriers to life on worlds with helium-dominated atmospheres. The post Could there be life in helium atmospheres on exoplanets? first appeared on EarthSky .

Microbes on the moon that hitch a ride on human astronauts could survive by using little nooks and crannies for protection from the harsh environment. The post How earthly microbes on the moon might survive in the shade first appeared on EarthSky .

On today's date, August 25, 1989, Voyager 2 flew over the north pole of Neptune, making its closest approach to a planet in its outer solar system Grand Tour. The post Voyager 2: Our 1st and only visit to Neptune first appeared on EarthSky .

Pluto is the largest of many small bodies in the outer solar system. That's partly why it was demoted from major planet to dwarf planet in 2006. The post Pluto became a dwarf planet 20 years ago today first appeared on EarthSky .