Credit: X-ray: NASA/CXC/SAO; ESA/XMM-Newton; Optical HST: NASA/ESA/STScI; Optical Ground: Deep Space Remote observatories/B. Fera and S. Mandel; ESO/VLT As odd couples go, it’s tough to beat the ...

The young cluster Pismis 24 lies at the heart of the Lobster Nebula (NGC 6357) in Scorpius. The brilliant stars rank among the hottest and most massive in our galaxy. Tens of thousands of background ...

While Comets Wierzchoś and Tempel 2 are faint, there’s a breakout star in the early-morning sky that’s cracked naked-eye visibility: Comet C/2025 R3 (PanSTARRS). Recently recorded at mid-5th magnitude ...

Our attention is back on Jupiter in the west this evening, though, as Ganymede finally reaches the planet’s eastern limb and begins a transit overnight. First, though, Io is completing another transit ...

NASA’s Lucy spacecraft visited the asteroid 52246 Donaldjohanson on April 20, 2025, coming within 600 miles (920 kilometers) of the object located in the inner region of the asteroid belt between Mars ...

Yes, groups are making plans, but addressing the trash problem on the Moon is surprisingly complex. Currently, organizations are looking at the problem through three different lenses: preservation, ...

Before we lose sight of Canis Major in the nighttime sky, get in a last good look at the Big Dog’s famous double star, 145 Canis Majoris, sometimes called the Winter Albireo. Two hours after sunset, ...

When Duke and Young hit the regolith, it marked the first time that astronauts had set foot in the rugged lunar highlands. Apollo 16’s landing site was Descartes, a region some 7,400 feet (2,250 ...

On April 11, 1970, the Apollo 13 mission launched. Intended to be the third lunar landing, it was crewed by Commander Jim Lovell, who had flown previously on Apollo 8, and Fred Haise and Jack Swigert, ...

On April 10, 2019, astronomers revealed the first image ever taken of a black hole, bringing a dramatic conclusion to a decades-long effort. The iconic image offered humanity its first glimpse at the ...

The countdown has begun. The crew is ready. And barring any last-minute hiccups, four astronauts on Wednesday will begin a journey that sends them farther from Earth than any human has gone before.

Exciting planetary action takes place this month. Venus and Uranus vie for attention and lie close to each other in late April. Jupiter offers a lot to observe through a telescope, particularly events ...