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EarthSky

Use Orion’s Belt to find other stars

How to use Orion’s Belt to find 4 bright stars – Betelgeuse and Rigel in Orion – Aldebaran in Taurus the Bull and Sirius in Canis Major.

What would Earth be like with no moon?

Earth without its moon would be a very different world indeed. No eclipses. Smaller tides. But the biggest change would be in the length of Earth’s day.

What’s the birthstone for December?

December has two birthstones, turquoise and zircon.

When is my earliest sunset?

At the latitude of Miami, Florida or Brownsville, Texas in the U.S. – or, say, the city of Naha in Okinawa, Japan – the earliest sunsets of the year are happening now. How earliest sunset varies with latitude, but always comes before the winter solstice.

Astro festivals, star parties, workshops

The wintertime star parties are mostly at southerly latitudes. Time to plan a winter vacation!

A farewell to Saturn

Two days before it plunged into Saturn’s atmosphere last September 15, the Cassini spacecraft returned this final, full mosaic image of the planet.

Come to know the Pleiades, or 7 Sisters

At this time of year, for all of us around the globe, the Pleiades star cluster culminates – reaches its highest point in the sky – around midnight.

Cassiopeia to Andromeda galaxy

One half of the W of Cassiopeia is more deeply notched than the other half. This deeper V is your “arrow” in the sky, pointing to the Andromeda galaxy.

Asteroids photobomb distant galaxies

The Hubble Space Telescope captured nearby asteroids photobombing distant galaxies

Is telekinesis real?

A neuroscientist talks about the history of telekinesis and the complexity of the human brain.