New studies offer contrasting scenarios for making the Moon. One argues for a one big splat early in solar-system history; a second envisions a score of lesser blows that built up the Moon over time; and a third suggests water was involved.
It won't be a great year for lunar eclipses, with a deep penumbral event on February 11th and a partial on August 7th. But an annular solar eclipse is observable from the Southern Hemisphere on February 26th, and a total solar eclipse crosses the continental U.S. on August 21st.
When it comes to capturing a total solar eclipse, few can match the expertise of Fred Espenak. Get valuable tips from "Mr. Eclipse" himself during S&T's live webinar on Thursday, January 12th.
Everyone enjoys the brief and sometimes dazzling streaks of light from meteors, sometimes called "shooting stars." Sky & Telescope predicts that the two best meteor showers in 2017 will be the Quadrantids in early January and the Geminids in mid-December.
Download our monthly astronomy podcast to spot Venus and Mars in the west — and two star clusters high up — after sunset.
Thanks to some timely NSF support, the American Astronomical Society is offering dozens of small grants to U.S. groups that offer outreach programs tied to the 2017 s
This beautifully detailed 6-inch globe lets you explore the amazing geology revealed by New Horizons during its historic 2015 flyby.
The red supergiant marking Orion's shoulder seems to be spinning too fast. Did it get a boost when merged with a smaller companion star 100,000 years ago?
New results from NASA's Dawn orbiter show that the largest asteroid (and acknowledged dwarf planet) must possess a global layer of water ice that lies just below its dark, dusty surface.
From humble beginnings in 2008, a simple idea — equipping libraries with loaner telescopes — has caught on across the United States.
Download our monthly astronomy podcast to track down Mercury in the evening sky. Then swing around to the east, to behold Orion, the mighty Hunter, climbing into the sk
Although relatively obscure, this modest display is the strongest meteor shower in late November. Moonless skies make them easier to pick ou
A big, nitrogen-ice-filled basin has apparently caused Pluto's entire crust to shift over time.
This year's display of Leonid meteors peaks on November 17th, but they'll be largely washed out thanks to strong interference from the Moon.
Much has been said and written about the Moon's proximity to Earth today. Is that a good thing or a bad thing?
Thanks to two aggressive search programs, the count of near-Earth asteroids has soared past the 15,000-object milestone. (None of them are likely to hit us.)
Mark your calendar for Wednesday, November 9th, when you'll get great background info and travel tips for America's coast-to-coast total solar eclipse.
Mars is still hanging around, and Venus is climbing higher each evening. Download our monthly astronomy podcast to get more stargazing info.
A pair of high-resolution images taken from high above Mars appears to show the impact site of ESA's Schiaparelli lander.
Hubble images reveal a satellite orbiting one of the Kuiper Belt's biggest objects.
After a 7-month journey from Earth and a 139-minute rocket burn, the ExoMars Trace Gas Orbiter has settled in around its new home.
Planetary scientists haven't yet witnessed an active volcano on Venus, but a new study pinpoints a likely set of still-warm lava flows.
This year's awards from the Astronomical League showcase some talented high-school students and astronomy clubs throw great star parties.
Right now 2014 UZ244 lies nearly 14 billion kilometers away, ranking it third among the most distant objects known in the Kuiper Belt.
Newly released Hubble images show what appear to be towering jets of water coming from Jupiter's moon Europa.