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Slooh astronomers catch comet breakup

Will comet 73P/Schwassmann-Wachmann survive its March 16 sweep near the sun, or disintegrate into a trail of cosmic dust?

Round object crosses the moon

During Friday’s penumbral eclipse of the moon, an observer in Puerto Rico captured images of a black disk moving across the moon’s face.

Hints of a quiet, stray black hole

Theoretical studies predict 100 million to 1 billion black holes in our Milky Way galaxy. So far, astronomers have found about 60. A serendipitous discovery could lead to finding more.

Green Comet 45P: Photos and video

Green┬áComet 45P┬áhas been in our sky for months and passed closest on February 11, 2017. It’s a faint one, but intrepid astronomers have captured some wonderful images!

Full braking at Alpha Centauri

Space visionaries might have figured out a way to travel within decades to the nearest star system, Alpha Centauri. But, once we get there, how do we slow down?

Possible to have 3 eclipses in 1 month?

In 1 calendar month, 3 eclipses are rare. But in 1 lunar month, 3 eclipses are are more common. From 2000-2050, it happens 14 times.

Why no eclipse every full and new moon?

This year, in 2017, there are 12 full moons and 12 new moons, but only four eclipses – two lunar and two solar.

Northern U.S. meteor dazzles thousands

Early Monday morning, thousands of people across multiple northern U.S. states watched a brilliant meteor streak across the sky. It then plunged into Lake Michigan.

Today in science: Great Meteor Procession

The February 9, 1913 meteors crossed the sky in formation, on nearly identical paths. Their pace across the sky was described as “stately” and “measured.”

What is retrograde motion?

Retrograde motion of Jupiter or Mars or Saturn in our sky is an illusion, caused by Earth’s passing these slower-moving outer worlds. But there’s a real retrograde motion, too.