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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.
February 8, 2016
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.
February 7, 2016
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.
October 12, 2015
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.
September 27, 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.
September 1, 2015
March 20 eclipse and the Saros
There are currently 40 different Saros series in progress, each with its own assigned number. The total solar eclipse of March 20, 2015 belongs to Saros 120.
March 13, 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!
January 7, 2015
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.
November 1, 2014
Comet Siding Spring’s near-miss of Mars was October 19
The close pass of Comet Siding Spring to Mars was exciting! Closest approach was October 19. Watch for photos from the event here at EarthSky.org.
October 19, 2014
Moon and Mercury low in west after sunset September 25 and 26
Try to catch the young moon, Mercury and star Spica in the sunset direction on September 25 and/or 26. Best seen from S. Hemisphere. N. Hemisphere viewers ... try it!
September 25, 2014
