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Sirius midnight culmination New Years Eve
On New Year's Eve, look up for the brightest star Sirius in the constellation Canis Major. It's at its highest in the sky at midnight.
December 31, 2017
Moon hides Aldebaran on December 30
We all can see Aldebaran - brightest star in Taurus the Bull - near tonight's moon. Those in northeastern North America, Greenland, Iceland and northern Europe can see the moon pass in front of Aldebaran.
December 30, 2017
See 3 planets in a line before sunrise
Draw an imaginary line from the red planet Mars through the king planet Jupiter to find elusive Mercury near the sunrise point on your horizon.
December 29, 2017
Bellatrix, in Orion, means Female Warrior
You might know Rigel and Betelgeuse, Orion's brightest stars. Now meet 2 more stars in Orion, called Bellatrix and Saiph.
December 28, 2017
Planet Uranus in moon’s glare on December 27
The December 27 moon is close to the 7th planet, Uranus. The lunar glare glare will make it tough to spot, but notice stars nearby ... and come back when the moon is gone.
December 27, 2017
Focus on stars Betelgeuse and Rigel
Many constellations have a bright star, but Orion has two: Rigel and Betelgeuse.
December 25, 2017
Catch Mercury in the morning sky
It's in the sunrise direction before sunup, but very low in the sky. Luckily, 2 other planets - Mars and Jupiter - are pointing to Mercury.
December 22, 2017
Summer Triangle on winter evenings
How long into Northern Hemisphere winter will you be able to see the Summer Triangle?
December 22, 2017
21st century’s longest lunar month starts December 18
Lunar months are roughly 29.5 days. The upcoming one will be 7 hours longer than the mean and this century's longest lunar month. Why?
December 17, 2017
See a star that changes its brightness
Sheliak is a variable star in the constellation Lyra the Harp. You can notice its brightness changes in a cycle lasting 6.5 days.
December 16, 2017
