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Astronomy Essentials

Wikimedia Commons, Paul Stansifer, User:84
FAQs | Tonight | Aug 29, 2014

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.

Hoax image via social media.
Blogs | Tonight | Aug 27, 2014

No double moon on August 27

Will Mars and the moon will appear the same size on August 27, 2014? Gosh, no. What’s really amazing is the staying power of this 11-year-old hoax.

Young moon of March 31, 2014 by Ken Christison.
Blogs | Tonight | Aug 25, 2014

Longest lunar month of 2014 starts on August 25

The longest lunar month of 2014 starts with the August 25 new moon and ends September 24. All you need to know about the varying lengths of the lunar months, here.

Via NASA
Tonight | Aug 02, 2014

Top 7 tips to minimize moon and optimize 2014’s Perseid meteor shower

The August 2014 supermoon will do its best to drown out the 2014 Perseid meteor shower. Here are 7 tips for enjoying the Perseid meteors in 2014.

Perseid meteor
Tonight | Jul 24, 2014

Everything you need to know: Perseid meteor shower

In the N. Hemisphere, the annual August Perseid meteor shower ranks as the year’s favorite shower. A big, bright supermoon interferes in 2014. So start observing the Perseids soon!

Comet_holmes_and_meteor
Tonight | Jul 24, 2014

Everything you need to know: Delta Aquarid meteor shower

In 2014, late July is best for this shower, thanks to the new moon on July 26, and the shower’s nominal peak around July 29.

Binoculars are the perfect stargazing tool
Tonight | Jul 17, 2014

Top 6 tips for using ordinary binoculars for stargazing

If you’re a beginning stargazer or a veteran of thousands of starlit nights, binoculars can be your best friend. Here’s how to get started.

Supermoon-cp
Jul 11, 2014

Does a supermoon have a super effect on us?

The moon (and sun) creates the tides. An extra-close full moon creates higher tides. But this same gravitational effect doesn’t extend to humans.

Self-portrait by Dan Bush
Tonight | Jul 07, 2014

EarthSky’s top 10 tips for super stargazers

Here are 10 simple tips that can help you connect with the night sky, and have fun.

Pluto, Charon, sun. Artist's concept via LPI
Tonight | Jul 04, 2014

Earth passes between sun and Pluto on July 4

Pluto’s 2014 opposition comes just one year before the New Horizons spacecraft will encounter this distance world and its moons.