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Astronomy Essentials

Photo by Justin Ng
Tonight | Jan 08, 2015

EarthSky’s meteor shower guide for 2015

No major meteor showers are predicted until the Lyrid shower, peaking on the morning of April 23, 2015. Between now and then … fireball season!

Lyrids and others via NASA/MSFC/D. Moser
Tonight | Jan 08, 2015

Everything you need to know: Lyrid meteor shower

The Lyrids offers 10 to 20 meteors per hour at its peak on a moonless night. That is the morning of April 22 or 23, with the nod going to April 23.

Total solar eclipse via Fred Espenak
Blogs | Jan 07, 2015

How many solar and lunar eclipses in one calendar year?

Each calendar year has at least four eclipses – two solar and two lunar. Most years have four, but five, six or even seven eclipses are also possible.

Meteor via Cumbrian Sky
Blogs | Tonight | Jan 07, 2015

When is the next meteor shower?

No major meteor showers are predicted until the Lyrid shower, peaking on the morning of April 23, 2015. Between now and then … fireball season!

earth_sun_300
FAQs | Jan 03, 2015

Are the December solstice and January perihelion related?

December solstice 2014 is December 21. Earth is closest to the sun in 2015 on January 4. Coincidence?

Quadrans Muralis via Atlas Coelestis.
Tonight | Jan 02, 2015

Everything you need to know: Quadrantid meteor shower

The 2015 Quadrantid meteor shower is likely to produce the most meteors before dawn January 4, although in the glare of the almost-full moon.

quadrantid-radiant-cp
Tonight | Jan 02, 2015

Quadrantid meteors fly in moonlight in early January 2015

You might see the 2015 Quadrantid meteor shower peak in moon-free skies just before dawn on January 3 or 4.

 
Tonight | Dec 27, 2014

See brightest star Sirius at midnight on New Year’s Eve

Sirius should be called the New Year’s star. It celebrates the birth of 2015 by reaching its highest point in the sky around the stroke of midnight on New Year’s Eve.

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?

ursid-radiant-point-cp
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.