Yesterday, the four-person Artemis 2 crew completed the first crewed lunar flyby since Apollo 17 in 1972, passing within roughly 4,067 miles of the lunar surface before turning back toward Earth. The ...

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 ...

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, ...

One of the greatest polymaths of all time and the archetypical Renaissance man, Leonardo da Vinci was born April 15, 1452, in Italy. Despite no formal education beyond elementary school-level lessons ...

Europa, now having reached the far western end of its orbit and heading back toward the planet, disappears in an occultation behind the disk of Jupiter at 11:30 P.M. EDT. If you can, get your ...

To understand how long a planetary nebula remains visible, we first need to understand why a planetary nebula is visible at all. When a solar-type star (one with a mass of 0.8 to eight times that of ...

In 1958, a newly minted Harvard Ph. D. named Frank Drake came to Green Bank. Usually he sought out typical radio astronomy targets — the Van Allen Belts around Earth, say, or the surface temperature ...

In 1959, having determined that military test pilots would make the best astronauts, NASA began screening the records of 508 candidates. From there the group was narrowed to 110 men who went through ...

April 5: Your last glimpse of Comet Wierzchoś? The Moon passes 0.6° south of Antares at 4 P.M. EDT on April 6, with the two visible together in the early-morning sky prior to the passage. Look south ...

Moonless spring evening skies are great for galaxy hunting. Leo is well known for its trio of bright galaxies (M65, M66, and NGC 3628), but the Lion has many more extragalactic targets to offer as ...

The Sky This Week from February 20 to 27: The Moon grazes the Pleiades Sky This Week, The Sky This Week ...

The Orion spacecraft will be visible, if challenging, from the U.S. early on the morning of Friday, April 10. Here's how to ...