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 ...

New analysis of ALMA observations of interstellar comet 3I/ATLAS show its water carries a chemical signature pointing to a ...

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

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

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

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

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

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

Bright Venus stands proudly between the horns of Taurus the Bull after sunset tonight, forming a nearly straight line with the stars marking the tips of the horns. Visible in the west within an hour ...

Stars twinkle and sometimes appear to move around due to our atmosphere “scrambling” their light as it travels to our eyes.

Although the Moon is bright, step outside early this morning to see if you can spot some fast-moving meteors left behind by ...

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 ...