Watch 20,000 Satellites Orbit Earth In Real Time — Simply Amazing!

Stuff in Space is a real-time 3D map of man-made objects in Earth orbit brought to life by James Yoder. Yoder is a robotics guy and an incoming electrical engineering and computing freshman at the University of Texas at Austin. I’ve seen individual satellite simulations in real time on other sites, but this thing’s incredibly…
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Jupiter’s Back And It’s Good At Math

I stayed up way past my bedtime the other night. I knew it was late because Jupiter rose off to the southeast. What a pleasant surprise it was to see the big, bright planet up before midnight. Then I looked through the eyepiece of my telescope and got a second surprise: Ganymede, the largest of…
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Meet M3 The Magnificent, A Spring Showpiece

  Lots of star clusters, nebulae and galaxies have nicknames based on their beauty, appearance and location. For instance, we have the Eagle Nebula, Fish on a Platter, Hamburger Galaxy and Ant Nebula. What an oversight then that M3, one of early spring’s most magnificent globular clusters, has no name. We only know it by…
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Moon, Mars, Saturn Come Together At Dawn

Although Mars and Saturn have parted, they’re still within earshot of each other, separated by less than 3° tomorrow morning (April 7). At the same time, the last quarter moon joins the scene, passing just 1° north of Saturn to make a bright threesome. Saturn’s rings are in full tilt and show clearly in a…
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Milky Way Core May Be Riddled With 10,000+ Black Holes

We’ve only ever known about one black hole in the center of the Milky Way. As wide as the solar system and packing a mass of 4 million suns, it’s called Sagittarius A* (pronounced ‘A star’).  Now, it looks like it’s got a lot of company. A Columbia University-led team of astrophysicists has discovered a dozen…
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