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Astronomy Essentials
Tonight
Visible planets and night sky guide for April
Visible planets and night sky guide. Brilliant Venus and the thin crescent moon hang in the west this evening after sunset. Don't miss this spectacular pairing!
April 18, 2026
Earth
Will a super El Niño in 2026 bring record high temps?
Signs are trending toward a super El Niño to develop this summer. If it happens, we might see record high temperatures in 2026 and into 2027.
April 17, 2026
Space
DESI’s 3D map of the universe is complete!
Astronomers have completed the largest, most detailed 3D map of the universe ever made. It will help reveal how dark energy shapes the cosmos.
April 17, 2026
Brightest Stars
Alpha Centauri, the star system closest to our sun
Our closest stellar neighbors are the 3 stars that make up the Alpha Centauri system. They lie just over 4 light-years away from us.
April 17, 2026
Space
See and hear galaxies evolving in new simulations
See and hear galaxies evolving in new simulations with this video. The simulations help astronomers trace growth from the early universe to today.
April 16, 2026
Earth
Hidden soil fungi stole bacterial DNA to control the rain
Some soil fungi have a superpower, inherited from bacteria. It means they can reach up into the atmosphere and pull down the rain.
April 16, 2026
Earth
Seattle waterspout! What are waterspouts and how do they form?
See the Seattle waterspout that formed in Puget Sound on Wednesday. Then read more about waterspouts, which are essentially tornadoes over water.
April 16, 2026
Constellations
See Antlia the Air Pump on April evenings
Antlia the Air Pump is a constellation that lies in southern skies. It contains dim stars and galaxies, including NGC 2997.
April 16, 2026
Space
Huge ancient sandstorm on Mars revealed in rippled sediments
Dust storms are common on Mars. But ripples in blocks of bedrock have revealed evidence of a more intense sandstorm on Mars about 3.5 billion years ago.
April 15, 2026
Astronomy Essentials
New meteor shower from an asteroid being eroded by the sun
A new meteor shower has been linked to an asteroid that was broken up when it passed too close to the sun. Find out more here.
April 15, 2026
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