Posts by 

Editors of EarthSky

Why love really is a drug

On this Valentine's Day, watch a video about certain chemicals - including dopamine, oxytocin and vasopressin - making you feel good around someone you love.

Chuck Yeager – personification of the ‘right stuff’ – born 100 years ago

Chuck Yeager, a military test pilot, became the first to break the sound barrier on October 14, 1947. Afterwards, he was dubbed "the fastest man alive."

February birthstone is the amethyst

Are you a February baby? Here's some cool info about your February birthstone, the amethyst. Read the lore of this purple stone, a variety of quartz.

Groundhog Day is an astronomy holiday

Traditionally, on Groundhog Day, Punxsutawney Phil sees his shadow - or doesn't - to predict six more weeks of winter - or an early spring.

Mercury is up before sunrise: Start watching now

Watch for Mercury in the east before sunup in January 2023. Mercury reaches greatest elongation on January 30 and remains bright through the end of the month.

Lunar New Year 2023: Year of the Rabbit

The Lunar New Year falls on January 21, 2023 (January 22 in Asia). It coincides with the date of new moon and signals the start of the Year of the Rabbit.

2023 June solstice: All you need to know

The June solstice takes place on June 21, 2023. Longest day for the Northern Hemisphere. Shortest day for the Southern Hemisphere.

Too cold to snow? Is that possible?

Can it ever be too cold to snow? The fact is, no matter how cold a snow-producing cloud is, if it has a source of water, it can build big snowflakes.

Cassiopeia and the Big Dipper in January

Watch the celestial clock and its two great big hour hands - Cassiopeia and the Big Dipper - as they swing around the North Star every night!

How far is Betelgeuse, the famous doomed star?

Betelgeuse is bright and it's exciting because one day it will explode - but how far away is it, really? Astronomers aren't sure.