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…
Read More

See The Spring Triangle / Farewell Humanity!

We all enjoy making patterns of stars in the sky. Ones that have been around a long time and familiar to many are called asterisms. Orion’s Belt is one, so are the Big Dipper and Summer Triangle. Last month, I wrote about the Winter Triangle, but did you know there’s a Spring Triangle, too? It’s…
Read More

Get Lost In The Jovian Triangle / Moon Bricks

I stepped outside late last night and saw a crisp triangle in the stars with corners formed by Jupiter, Spica and Arcturus. The geometry in math books may be confusing to some, but everyone can understand triangles of stars and planets in the night sky. This one is very close to a right triangle, so…
Read More

Salvador Dali Would Love These Constellations

Yesterday we dipped into the deep past, hungering to know more about the first generation of suns that formed after the Big Bang. Today we look into the future at what the sky will look like thousands of years from now, when the cumulative motion of the stars will render many of the familiar constellations…
Read More

Welcome Arcturus!

I really shouldn’t be surprised anymore. But I always am when I see the fiery bright star Arcturus appear in the east on midwinter evenings. Surprised because Arcturus is more closely associated with spring, especially the month of June, when it sails high in the southern sky when sultry twilight finally gives way to night.…
Read More