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Editors of EarthSky

Can sharks smile? It’s Shark Week on the Discovery Channel

Dogs, monkeys and dolphins all show expressions akin to human smiles. But can sharks smile? They may look as if they're smiling, but are they, really?

Mercury is back in the evening sky July 2024

Mercury is visible in the evening sky. Look in the west as the sky is darkening. The planet will reach its greatest elongation on July 22, 2024.

Meteor shower guide 2024: Up next the Delta Aquariids

The Delta Aquariids meteor shower rambles across the skies for weeks. Look for them from late July through early August. Your 2024 meteor shower guide here.

Noctilucent clouds: Best season in years, happening now!

It may be the best noctilucent cloud season in years! Europe has had stunning displays of these night-shining clouds. See a gallery of noctilucent clouds.

Asteroid Day to be observed worldwide on June 30

Asteroid Day is celebrated each year on June 30. Events are celebrated in Luxembourg (June 28-29) and around the world. Find more info here.

Draco the Dragon and Thuban, a former pole star

Let your eyes and imagination drift to see the winding shape of Draco the Dragon. And meet Thuban, a former pole star, between the Big and Little Dippers.

June solstice in 2024: All you need to know

The June solstice will happen on June 20, 2024. It's the longest day for the Northern Hemisphere and the shortest day for the Southern Hemisphere.

Earliest sunrises (or sunsets) come before June solstice

If you live in the Northern Hemisphere, your earliest sunrises of the year are happening around now. Southern Hemisphere? Your earliest sunsets are around now.

Celebrate World Oceans Day today, June 7, 2024

World Oceans Day has been honored since 1992. It's a day to raise awareness about how we're connected to the oceans and how we can protect ocean habitats.

The North Star: Does it ever move?

The North Star is a symbol for constancy. But, a video of it overnight, reveals that it makes its own little circle around the sky's north pole every day.