A radar sounder aboard China’s first-ever lunar lander found at least nine discrete subsurface layers at its landing site in northern Mare Imbrium.
The long-distance traveler has arrived at the first dwarf planet (and largest asteroid) ever studied by spacecraft.
New observations suggest that several dozen low-mass stars, and eventually perhaps even planets, are forming just 2 light-years from our galaxy’s supermassive black hole.
Mark the change of seasons with the Big Dipper and the constellation Cassiopeia, and enjoy bright Venus and Jupiter in the evening skies.
When the Moon next covers the Sun, on the equinox, its hard-to-reach path will include the North Pole but very little land.
Join Sky & Telescope in Iceland to see fascinating geology, a unique culture — and best of all, a chance to see auroras.