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Editors of EarthSky

Delta Aquariid meteor shower: All you need to know in 2024

The nominal peak of the Delta Aquariid meteor shower is late July. But the shower rambles along steadily for weeks and intermingles with the Perseids.

Radiant point of meteor showers: All you need to know

Meteors enter Earth's atmosphere on parallel paths. So, you'll see meteors appear to come from a single point in the sky: the radiant point!

Mercury farthest from sunset for 2024 on July 22

The sun's innermost planet, Mercury, will stretch out a full 27 degrees from the sunset on July 22. That is nearly as far from the sunset as Mercury can be.

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?

Meteor shower guide 2024: The Delta Aquariids and Perseids

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.
Earth

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.