Space | EarthSky

For the first time, astronomers have discovered 3 supermassive black holes in a single galaxy in the early universe. Two of them are merging! The post A first! 3 supermassive black holes discovered in 1 galaxy first appeared on EarthSky .

NASA's Voyager 2 confirmed the discovery of Neptune's rings on August 22, 1989, when it took images of a faint, continuous ring system around the planet. The post Voyager 2 confirms Neptune’s rings on August 22 in 1989 first appeared on EarthSky .

Astronomers believe the little red dots we see in the early universe are a newly discovered type of object called a black hole star. The post Astronomers discover a black hole star, a new type of object first appeared on EarthSky .

Voyager 2 realized the vision of what was originally called a Grand Tour of the outer solar system. It is the only craft that has visited all 4 outer planets. The post Voyager 2 spacecraft launched 49 years ago today first appeared on EarthSky .

A tiny UK satellite called CosmoCube is to listen for signals from the early universe. It will use the dark side of the moon to block out noise from Earth. The post Detecting whispers from the early universe … from the moon first appeared on EarthSky .

NASA said on August 19, 2026, the mission to save the Swift spacecraft will not work after attitude control issues. Swift will crash back to Earth this year. The post Mission to save Swift spacecraft fails, will crash back to Earth first appeared on EarthSky .

Super-Earths might be solid in their deep insides, a new study says. Minerals might take unusual forms and remain solid despite the intense heat and pressure. The post Super-Earths might be solid deep on the inside first appeared on EarthSky .

The Vera C. Rubin Observatory has only just begun its survey, yet it has already discovered its first ultra-faint Milky Way satellite, Aquarius IV. The post 1st ultra-faint Milky Way satellite galaxy found by Rubin first appeared on EarthSky .

On this date in 1877, astronomer Asaph Hall discovered a moon for Mars: Phobos, the larger of 2 moons. He discovered the other moon, Deimos, later that year. The post A moon for Mars! Asaph Hall finds Phobos 149 years ago first appeared on EarthSky .

Sprawling, huge cracks on Venus have long puzzled scientists. A new study suggests the polygon shapes formed from drying mud on an ancient seafloor. The post Were these polygonal cracks on Venus once on a seafloor? first appeared on EarthSky .

The light our eyes can detect is only a sliver of the light out there. The electromagnetic spectrum describes all the wavelengths of light, seen and unseen. The post The electromagnetic spectrum: It’s more than visible light first appeared on EarthSky .

A SpaceX rocket hit the moon on August 5. Here's what astronomers have observed so far from this historic lunar event, including before and after pics. The post SpaceX rocket hit the moon: Before and after pics first appeared on EarthSky .

NASA's Curiosity rover has found vast new fields of Martian honeycombs in Gale crater. They likely formed from drying mud, just like we see on Earth. The post Vast Martian honeycombs featured in new Curiosity panorama first appeared on EarthSky .

A new study suggests that Neptune's inner moons formed when Neptune captured its largest moon Triton and a family of original small icy moons was destroyed. The post Were Neptune’s inner moons born from an ancient cataclysm? first appeared on EarthSky .

To celebrate the 14-year anniversary of Curiosity rover's arrival on Mars, here’s a video on the final 7 minutes of its chilling descent on August 5-6, 2012. The post Mars Curiosity rover’s 7 minutes of terror 14 years ago first appeared on EarthSky .