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Bruce McClure

Sirius, future South Pole Star

The sky’s brightest star, Sirius aka the Dog Star, will come to within 1.6 degrees of the south celestial pole in the year 66270.

Go young moon hunting

Given an unobstructed horizon in the direction of sunset, most of us around the world should spot a thin crescent moon not long after the sun goes down.

Will you see a young moon tonight?

The young moon will be tough to see low in your western twilight after sunset on January 17, 2018. But, especially if you’re in the Americas, you have a shot at it.

Lengths of lunar months in 2018

This new moon ends the longest lunar month of the 21st century and begins the longest lunar month of 2018.

Close and far moons in 2018

In 2018, the moon swings farthest from Earth for the year on January 15, only 2 weeks after coming closest to Earth for the year on January 1.

EarthSky’s 2018 meteor shower guide

Plan ahead now for an awesome year of meteor-watching. Good news! In 2018, the year’s 2 most reliable showers – August Perseids and December Geminids – happen with little to no interference from the moon.

Saturn, Mercury, moon this weekend

The Mercury/Saturn conjunction is Saturday, January 13. Plus, on both Saturday and Sunday mornings, the moon will be pointing toward these planets near the sunrise.

New Year’s Eve, in the Julian calendar

Happy Julian New Year! January 13, 2018 marks the last day of the year in the old-style Julian calendar. Why, and what happened when the calendars switched.

Sun in zodiac constellations, 2018

Sun-entry dates to zodiac constellations in 2018, using boundaries for constellations set by International Astronomical Union in 1930s.

Sun’s entry into zodiac signs, 2018

Astrology and astronomy are different systems. In some systems of astrology, signs of the zodiac remain fixed relative to seasonal markers, such as the equinox and solstice points on the sky’s dome.