The Moon reaches apogee, the farthest point from Earth in its orbit, at 5:46 A.M. EDT. At that time, our satellite will stand 251,996 miles (405,548 km) away. With the Moon sinking low in the hours ...

Key Takeaways: A 12-ton rocket loaded with a 1-ton warhead, the V-2 ’s successful launch would prove to be exceptionally significant to both the military and to space exploration. On Oct. 3, 1942, the ...

Venus seems like the last place you’d ever think about looking for life. It features searing-hot temperatures; a thick, hazy atmosphere raining droplet of sulfuric acid; and potentially active ...

Originally scheduled for October 11, a big observational event in southwestern New Mexico has been changed to Saturday, November 15. The original October date now faces a high chance of rainstorms in ...

The nearly Full Moon passes 4° north of Saturn at 11 P.M. EDT and sits close to the ringed planet all night. Despite our satellite’s proximity, you’ll want your telescope trained on Saturn this ...

On Oct. 4th, 1957, at 10:29 PM Moscow time, the Soviet Union successfully launched Sputnik 1 into space on a repurposed R-7 rocket. The world’s first artificial satellite, Sputnik was about 22 inches ...

Saturn’s moon Iapetus is now some 8’ east of the planet; although it is nearing 12th magnitude as it approaches its fainter eastern elongation in the first week of October, observers with larger ...

An ancient solar eclipse changed the course of a military conflict when it cast a shadow on a battle over Corinth between the Spartans, commanded by Cleombrotus, and the invading Persians, led by ...

Temperature is a measure of the average energy of a collection of particles. (This is in contrast to kinetic energy, which is a measure of the energy carried by a single particle.) So, to answer a ...

A close conjunction of the waning crescent Moon (approximately 26% illuminated) and Jupiter occurred around 7 A.M. EDT, observable in the eastern sky before sunrise, with the Moon positioned between ...

Tonight we’re aiming at the Moon to catch sunrise as it finally starts to reach the northwestern portions of the nearside. Use the accompanying chart and a telescope to locate a pair of craters near ...

I wanted to share the above image with you to demonstrate how prevalent satellite trails are becoming in astroimages. I received it from John Chumack, a longtime contributor to Astronomy magazine. He ...