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A moon for Mars! Asaph Hall finds Phobos 149 years ago
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.
August 17, 2026
Swift spacecraft, and a mission to save it, caught on video
The Swift space telescope is falling back to Earth. The LINK spacecraft is trying to save it. See both in orbit in a new video.
August 16, 2026
Were these polygonal cracks on Venus once on a seafloor?
Sprawling, huge cracks on Venus have long puzzled scientists. A new study suggests the polygon shapes formed from drying mud on an ancient seafloor.
August 15, 2026
The electromagnetic spectrum: It’s more than visible light
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.
August 7, 2026
SpaceX rocket hit the moon: Before and after pics
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.
August 6, 2026
Vast Martian honeycombs featured in new Curiosity panorama
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.
August 6, 2026
Were Neptune’s inner moons born from an ancient cataclysm?
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.
August 5, 2026
Mars Curiosity rover’s 7 minutes of terror 14 years ago
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.
August 5, 2026
Venus rings found high above the planet’s thick clouds
New analysis of images taken in 2010 reveals giant Venus rings high in the planet's atmosphere, hidden from normal view.
August 4, 2026
9 mind-blowing space facts that will shock you
Read 9 mind-blowing space facts about Earth, the sun, our galaxy and universe that will surprise and delight you. You'll be a hit at your next dinner party!
August 4, 2026
