Comet visible in binoculars, nearly closest

Comet C/2013 X1 (PanSTARRS) isn't visible to the eye, but binoculars can pick it up. Charts and other info that can help you spot the comet in the coming weeks!

Join the fun at ALCon 2016

ALCon 2016 is the national amateur astronomy convention, held this year from August 10-13 in Washington, D.C. Registration is now live!

Mars and Saturn in 2016

Video of this year's oppositions of Mars and Saturn, in front of the constellations Libra and Scorpius. Notice Mars appearing larger around its May 22 opposition!

Guide to Mars’ opposition on May 22

Earth flies between Mars and sun on May 22, bringing it closer than Mars has been in over a decade. How to find and enjoy Mars during 2016's close opposition!

Astronomical events in 2016

A month by month listing of major moon phases, conjunctions, oppositions, meteor showers and other important dates, from astronomer Fred Espenak.

See 5 bright planets at once

First time we can see 5 planets at once since 2005. All 5 are up before dawn, still, and all 5 will remain visible until Mercury disappears in the dawn just after mid-February.

Mars’ west quadrature on February 7

At west quadrature on February 7, 2016, the red planet appears 90% illuminated as seen through a telescope. Fantastic time to see Mars is just ahead.

October 13 to November 11: Longest lunar month of 2015

Longest lunar month of 2015 starts with the October 13 new moon and ends with the November 11 new moon. Learn about the varying lengths of lunar months, here.

Intriguing cycle of close and far moons

This post explains lunar perigee - the moon's closest point to Earth - and includes dates of all closest and farthest moons for each month of 2015.

How to see the Summer Triangle in September

Even as September is beginning, you have several more months to see the large asterism known as the Summer Triangle.