The presence of stars just 100 million years old in the Milky Way Galaxy’s central regions confirms our galaxy’s nonviolent past.
X-ray observations suggest that flares happen when a black hole’s “atmosphere” contracts and launches away from it.
Astronomers have produced an exquisite movie of another star’s rotating surface.
Hubble observations confirm that much of the light that broke up the early universe’s hydrogen came from the smallest galaxies.
WT1190F will burn up over the Indian Ocean on November 13th, giving researchers an unprecedented opportunity to follow its path — and figure out where it came from.
The spacecraft has taken its deepest dive through the water plume leaking from the subsurface ocean of Saturn’s moon Enceladus.
Watch for the waning crescent in the predawn hours, pairing nicely with striking Venus, and Mars and Jupiter are nearby.
If you see a really bright autumn fireball, it might be a Taurid meteor — a fragment of Comet 2P/Encke.
Travel 2.7 million light-years from home to the Pinwheel Galaxy, where we’ll visit a supergiant star, an extragalactic globular cluster, and one of the largest nebulae in the known universe.
Bright planets are putting on a stargazing show in the predawn sky, and evenings feature a mythical horse flying upside-down across the sky.
Sky & Telescope will host PixInsight expert Warren Keller in a live webinar, part of a new series looking at image-processing software on the market today.