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Astronomy Essentials
Tonight
Visible planets and night sky guide for June
EarthSky's visible planets and night sky guide. It's solstice weekend. Click in to learn what to watch for in your daytime and nighttime sky.
June 20, 2026
Today's Image
34 dust devils on Mars in 1 shot! Can you spot them all?
The Mars Express orbiter caught this view of the red planet, which is peppered with whirlwinds. Can you spot the 34 dust devils on Mars in this 1 shot?
June 19, 2026
Tonight
For all of Earth, longest sunsets around the solstice
Here's a natural phenomenon you might never have imagined: the longest sunsets happen around the time of a solstice, no matter where you are on the globe.
June 19, 2026
Astronomy Essentials
Space
Does the North Star ever move in the sky?
The North Star is a symbol for constancy. But a video or star trails image reveals that it makes its own little circle around the sky's north pole every day.
June 19, 2026
Space
No crisis? Universe’s expansion is accelerating, study says
Rebutting a surprising paper from 2025, a new study has found that the universe's expansion is accelerating after all. Crisis averted?
June 18, 2026
Space
New habitable exoplanets model narrows down search for life
Researchers have developed a new habitable exoplanets model to find out which rocky exoplanets could possibly support life.
June 18, 2026
Brightest Stars
Rastaban and Eltanin, the Dragon’s Eyes, on June evenings
Look in the northeast on these June evenings, near the star Vega. You'll see Rastaban and Eltanin, the eyes of Draco the Dragon.
June 18, 2026
Earth
Midwest tornadoes possible today, flash floods across Gulf?
Tornadoes, large hail and damaging winds are expected in the U.S. Midwest on Wednesday, while a tropical system could bring flash floods across the Gulf Coast.
June 17, 2026
Space
Are dark galaxies hiding in the nearby universe?
New simulations suggest our nearby universe could contain many dark galaxies, containing dark matter but no stars. And our radio telescopes could detect them.
June 17, 2026
Space
Satellites swarm the night sky in this new video
Alan Dyer shared this new video as satellites swarm across the sky, obscuring the summer Milky Way. Read more about Alan's video here.
June 17, 2026
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