Danger Zone
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If you’re close to the right kind of supernova, it’s gonna getcha. Radiation from the initial blast can zap any […]
Mars Samples
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The Perseverance rover is building up a stockpile. It’s collecting samples of Martian rocks, dirt, and air, and storing them
Moon and Spica
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One of the most famous of all skywatching directions is this: Arc to Arcturus, then spike to Spica. In other
Arcturus
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The Big Dipper is in the northwest this evening, with its bowl below the handle. Starting with the handle, use
Kopernik
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Nicolaus Copernicus changed the universe. He brushed aside the dogma of the 16th century, which held that Earth was the
Milky Way Satellites
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Our home galaxy, the Milky Way, is a galactic shepherd. It controls the movements of maybe 60 or more smaller
Local Group
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If you look at a map of just about any state, you’ll see a few major cities, a few more
New Moon
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Under the current western calendar, tomorrow is the 16th day of the month. But under another system, it’s the first
Targets of Interest
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At first glance, Gliese 913 is a pretty average star system. It’s a binary — two stars that travel through
Morning Move
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After commanding the western sky as the “evening star” for most of the year, the planet Venus is making a