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Deborah Byrd

Last quarter moon is February 7

Watch for the last quarter moon after midnight Tuesday, or early Wednesday morning. It’ll be showing us half of its lighted half, or day side.

Watch online as 2 asteroids sweep close this week

How to watch online this week as 2 newly discovered asteroids – 2018 CB and 2018 CC – sweep closer to Earth than the moon.

Volcán de Fuego from Earth and space

Volcán de Fuego – literally “fire volcano” – is one of Central America’s most active volcanos. Photos of its recent eruption here.

See the Double Cluster in Perseus

First, find the M- or W-shaped constellation Cassiopeia. The Double Cluster – 2 open star clusters – is nearby and beautiful in a dark sky.

Scientists solve a methane puzzle

Since 2006, levels of heat-trapping methane in Earth’s atmosphere have risen sharply. A new study settles a disagreement about the source.

When is the next Blue Moon?

Blue-colored moons are rare. But folklore has defined 2 other sorts of Blue Moons, which are more commonly seen. The next one will be March 31, 2018.

Locate Cassiopeia the Queen

An earlier name for Cassiopeia was Cassiopeia’s Chair. A legend from ancient Greek mythology explains why.

When is the next supermoon?

We’ve just passed a series of 3 full supermoons. The next supermoons of 2018 will be the new moons of June, July and August.

Asteroid to buzz by Super Bowl Sunday

How to watch online as asteroid 2002 AJ129 – a relatively massive, fast-moving asteroid – passes at about 10 times the moon’s distance on February 4, 2018.

Where’s the moon? Waning gibbous

You’ll find the moon rising late at night, and, if you look closely, you might catch it in a blue daytime sky, in the west after sunrise.