New observatories and spacecraft missions are probing environments in our solar system that could potentially host life but have long remained hidden. Icy moons like Saturn’s Enceladus and Jupiter’s Europa likely contain oceans beneath frozen outer shells. But a layer of ice prohibits space probes from sampling them directly. Exploring these icy moons is almost forensic: Their surfaces keep aContinue reading "Scientists used a method from ecology to identify whether icy moons could hold conditions for life"

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📷: Greg Meyer from Phoenix, Arizona The Antenna Galaxies (NGC 4038/9; at left) in Corvus are one of the most famous examples of interacting galaxies. As the two galaxies merge, gravitational tidal forces have flung their stars out into long tails. At right are the galaxy NGC 4027 and its smaller companion NGC 4027A. TheContinue reading "A galactic collision"

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About 63 hours after its launch, Surveyor 1 landed on the Moon on June 2, 1966. The 2,200-pound (998 kilograms) craft touched down inside a 62-mile (100 kilometers) crater north of Flamsteed Crater in Oceanus Procellarum, or the Ocean of Storms. Surveyor 1 took more than 11,000 photos, and measured the Moon’s temperature and theContinue reading "June 2, 1966: Surveyor 1 lands on the Moon"

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Looking for a sky event this week? Check out our full Sky This Week column.  June 1: Mercury at its best Titan, Saturn’s brightest moon, is located near its parent planet for the next two days. Visible in the early-morning sky, you’ll find Titan just northeast of Saturn this morning.  Spotting Saturn is easy — rising shortlyContinue reading "The Sky Today on Tuesday, June 2: Titan stands close to Saturn"

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Blue Moons are known for the folklore surrounding their appearance in the skies. But the real thing has less to do with its color and more with the timing of the year’s Full Moons. The next Blue Moon is May 20, 2027. It will be a seasonal Blue Moon; here’s what that is: There areContinue reading "What is a Blue Moon? When’s the next one?"

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