Nicknamed the “Mother of Hubble,” Nancy Grace Roman spent years pushing for the use of the newest technology to better ...

New Moon occurs at 4:01 P.M. EDT, leaving the evening sky perfect for deep-sky observing. By 10 P.M. local time, the sky should be dark. High in the south is the constellation Canes Venatici, where ...

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 ...

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

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

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 ...

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 ...

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.

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