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Astronomy Essentials

Credit: Russell Croman
FAQs | Tonight | Dec 25, 2014

Was the Christmas Star real?

A wondrous star has grown to be a major symbol of Christmas around the world. But what was it, really?

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Tonight | Dec 19, 2014

Ursid meteors active around December solstice

As many as 100 Ursid meteors per hour have been seen – but only in short bursts. Expect 5 to 10 meteors per hour.

December solstice
Blogs | Tonight | Dec 18, 2014

Everything you need to know: December solstice 2014

December solstice 2014 is coming up this Sunday, December 21 at 23:03 UTC. Celebration time!

Geminid meteors radiate from near star Castor in Gemini.
Blogs | Tonight | Dec 14, 2014

Everything you need to know: Geminid meteor shower

Peak viewing was Saturday night, but, if you look in a dark sky late Sunday until dawn Monday, you might still catch a stray Geminid.

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Tonight | Dec 10, 2014

EarthSky’s top 10 tips for meteor-watchers

You might see a lot or you might not see many, but if you stay in the house, you won’t see any.

Geminid meteors radiate from near star Castor in Gemini.
Blogs | Tonight | Dec 10, 2014

Radiant point for December’s Geminid meteor shower

The December Geminid meteor shower radiates from the constellation Gemini – in the east in mid-evening or overhead by about 2 a.m.

Leonids via NASA
Tonight | Nov 15, 2014

Everything you need to know: Leonid meteor shower

The famous Leonid meteor shower peaks between midnight and dawn on Monday (November 17) and Tuesday (November 18).

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Science Wire | Nov 01, 2014

1 dead 1 injured after crash of Virgin Galactic’s SpaceShipTwo

Virgin Galactic’s SpaceShipTwo rocket plane – a craft intended to carry tourists on suborbital flights – exploded and crashed during a test flight Friday.

Photo via Kurt Magoon on Flickr
Tonight | Oct 31, 2014

Halloween derived from ancient Celtic cross-quarter day

Yes, Halloween is an astronomical holiday.

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Blogs | Oct 23, 2014

Is it possible to have three eclipses in one month?

Three eclipses in one calendar month are rare. Three eclipses in one lunar month are more common. From 2000-2050, it happens 14 times.