January birthstone: The colorful garnet

Garnets, the beautiful January birthstone, are often thought to be red gemstones. But they also come in yellow, green, orange, brown and black.

Learn how to shoot photos of meteors

Want to shoot photos of meteors with your camera? The first step is planning. The next step is to gather your equipment. Then on to the capture process.

Myths of the northern and southern lights through history

For millennia, humans have viewed the northern and southern lights and created myths and folklore to explain the dancing lights they saw in the sky.

What’s a Blood Moon? All you need to know

By this definition, Blood Moon is a member of a special kind of lunar tetrad : four total lunar eclipses in a row. Now it's used for any total lunar eclipse.

Dwarf planet Ceres discovered 225 years ago today

Dwarf planet Ceres was discovered by Giuseppe Piazzi on January 1, 1801. That was 225 years ago. It was 1st considered an asteroid.

How to know your eclipse glasses are safe

Unscrupulous companies are printing ISO certification labels on fake eclipse glasses. Check here for reputable vendors from the American Astronomical Society.

Why does the New Year begin on January 1?

Why does the New Year begin on January 1? The tradition stems from the festival of Janus, the Roman god of past and future.

Apollo 8 Earthrise photo Christmas Eve 1968

Astronaut William Anders took this iconic photo of Earthrise on the 4th orbit of the moon aboard Apollo 8 on December 24, 1968.

What was the Christmas star? Science and mystery

What was the Christmas star? Some scientific explanations attempt to explain the Star of Bethlehem, including a planetary conjunction, comet or supernova.

The Wright brothers succeeded 122 years ago

The Wright brothers made aviation history on December 17, 1903, taking humanity’s 1st powered flight into the skies at Kitty Hawk.