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Astronomy Essentials

saturn_rings_300
Tonight | May 21, 2015

Give me five minutes and I’ll give you Saturn in 2015

Best time to see Saturn in 2015 is here! Instructions for finding this beautiful golden planet … here.

Image credit: Wikimedia Commons, Paul Stansifer
Science Wire | May 08, 2015

How far is a light-year?

Light is the fastest-moving stuff in the universe. It travels at an incredible 300,000 kilometers (186,000 miles) per second. So, in a year, light travels far.

2013 Eta Aquarids.  Composite image by Colin Legg.
Tonight | May 05, 2015

Everything you need to know: Eta Aquarid meteor shower

Eta Aquarid going on now. Good for both the northern tropics and Southern Hemisphere. How to watch, history, radiant point, here.

meteor_shower_300
Tonight | Apr 19, 2015

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.

Lyrids and others via NASA/MSFC/D. Moser
Tonight | Apr 18, 2015

Everything you need to know: Lyrid meteor shower

Awesome Lyrid prospects this year! You might see 10 to 20 meteors per hour at the peak on the mornings of April 22åç and 23, with the nod going to April 23.

April 17, 2015 old moon via Irenilda M Neves
Blogs | Apr 18, 2015

Shortest lunar month of 2015 starts April 18

The shortest lunar month of 2015 starts with the April 18 new moon and ends May 18. Learn about the varying lengths of the lunar months, here.

Moon eclipse - October 2014 - by John W. Johnson.
FAQs | Mar 31, 2015

How to watch a total eclipse of the moon

The April 4, 2015 total lunar eclipse comes in the morning for North America, and in the evening for Eastern Asia, Indonesia, New Zealand and Australia. Here’s what to look for.

Oct 23, 2014 partial solar eclipse by Mikael Linder
Blogs | Mar 21, 2015

Dates of lunar and solar eclipses in 2015 and 2016

Upcoming eclipses.

solar-eclipse-annular-cp
Blogs | Mar 18, 2015

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.

earth_lighting_equinox_300
Tonight | Mar 17, 2015

Everything you need to know: Vernal equinox 2015

Happy equinox, everyone! The 2015 vernal or spring (or fall) equinox comes on March 20 at 22:45 UTC (5:45 p.m. CDT).