Early risers have a great view of a lunar feature normally located near the limb this morning. An hour before sunrise, the Moon is roughly 20° above the eastern horizon. About 25 percent of its ...

A crescent Moon guides the way to the Red Planet as galaxies glow and Venus stands between the horns of the Bull in the sky ...

We cannot measure the slowing of time near the Big Bang because there is no “cosmic clock” outside of this event against ...

Main-belt world Egeria is drifting near the star 80 Virginis tonight — the asteroid’s motion will be readily observable.

Today in the history of astronomy, the facility that eventually will become the Cape Canaveral Spaceport and Kennedy Space ...

M94, also called the Croc’s Eye Galaxy, glows high in the sky tonight. How much detail can your scope pick out?

Now 15th magnitude, the comet is well-positioned for observation late overnight and into the early-morning hours.

New analysis of ALMA observations of interstellar comet 3I/ATLAS show its water carries a chemical signature pointing to a colder, more distant origin than any comet ever measured.

Without our satellite, Earth’s geology, biology, and climate — even human philosophy — would be vastly different.