Northrop Grumman sends up its robotic satellite mechanic, SpaceX tries again for Starship Flight 13 after a last-second abort ...

Time travel back to 1969 as the exact same lunar phase appears in the July 20 sky as Earth saw when astronauts first stepped ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This alignment ensures the entire side of the Moon that faces us gleams under ...

Tonight, the waxing crescent Moon will look just as it did on the night of July 20, 1969, when humans first set foot on our ...

July 19, 418 C.E., marks the first total solar eclipse (of which we have a record) during which a comet was seen. Turkish-born Church historian Philostorgius wrote in Book XII of the Epitome Historiae ...

Planetary nebula 6563 is a worthy challenge for larger scopes, floating near the base of the Teapot asterism in Sagittarius ...

Looking for a sky event this week? Check out our full Sky This Week column. July 17: The Moon skims south of Venus. Comet 10P ...

The Moon passes 2° south of Venus at 1 P.M. EDT. By this evening, they are roughly 6° apart, with the Moon to Venus’ lower left in the sky tonight, instead of the lower right (as it appeared yesterday ...

See the Moon as it looked on July 20, 1969. Plus, check out Comet Tempel 2 as planet Mercury stands still in the sky this ...

In 1839, the president of Harvard University invited William Bond to move into a house on campus and, by virtue of bringing along his own astronomical equipment, become the university’s first ...

Earth’s satellite sits near Regulus in the heart of Leo the Lion this evening, with blazing Venus nearby in the western sky ...

China's asteroid sample-return probe has closed to within 20 kilometers of 469219 Kamoʻoalewa, kicking off its science ...