The constellations overhead in May are dominated by Leo the Lion and Ursa Major the Great Bear. Leo is easy to pick out by spotting a large backward question mark known as the Sickle. The bright star ...

Venus dominates as the brilliant “Morning Star” in the east-southeast before dawn; the Eta Aquariid meteor shower takes place ...

Catch some morning meteors, see the Moon reach First Quarter, and watch Mars visit the Beehive in the sky this week.

Psyche has an unusual propulsion system which uses ionized xenon and which gives off a blue glow. These thrusters use tiny amounts of xenon and expel charged atoms to move forwards. While electric ...

As May commences, Jupiter, resembling a luminous golden star within the constellation Taurus, shines high above the western ...

Jupiter and Mars shine in the evening, more planets gather in the morning, and the Eta Aquariid meteors join in.

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they ...

By Deane Morrison In May Jupiter sinks into the sunset, ending a months-long guest starring role with the bright winter ...

Starting tonight and continuing for two weeks, we can watch the moon travel from just past new moon all the way to full moon.

Simply look to the western sky after sunset. The delicate form of the crescent moon is set to draw close to the planet ...

Coming up this Saturday night, May 3, the fat crescent Moon will hover next to the famous blue star Regulus. As the brightest luminary in the entire zodiac and the main star of Leo the Lion, the ...