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Space
Brown dwarf auroras might cause methane emission
For the 1st time, astronomers have found a methane emission on a brown dwarf. The researchers say that auroras in the brown dwarf's atmosphere may cause it.
April 25, 2024
Space
Asteroid hunt by Hubble telescope using AI
Astronomers used the Hubble Space Telescope to go on an asteroid hunt. They found over 1,000 previously unknown small asteroids in the asteroid belt.
April 25, 2024
Astronomy Essentials
Tonight
Visible planets and night sky guide for April
Visible planets and night sky guide for April 2024. On the mornings of April 26 and 27, watch for the moon close to the massive ruby red star Antares.
April 25, 2024
Brightest Stars
Sun
Sun news April 25: High activity, auroras on the way
Sun news April 25, 2024. Sun activity is high after 6 M flares. Geomagnetic storming likely tonight through tomorrow - get ready, aurora-chasers!
April 25, 2024
Constellations
Meet the Chamaeleon, a southern constellation
The constellation Chamaeleon the Chameleon is a dark patch of sky that lies deep in the Southern Hemisphere and is visible any night of the year.
April 25, 2024
Space
Io’s volcanoes have been erupting for billions of years
A new study reveals Io's volcanoes have been erupting for billions of years, ever since the small moon of Jupiter 1st formed along with our solar system.
April 24, 2024
Tonight
Daytime moon is up after sunrise now
Watch for the moon in the morning sky - after sunrise - for a few days after full moon. Look west after the sun comes up!
April 24, 2024
Brightest Stars
Cor Caroli, named for the heart of a king
Cor Caroli is a binary star and the brightest star in the northern constellation Canes Venatici, the Hunting Dogs. Its name means Heart of Charles.
April 24, 2024
Space
Hurray! Voyager 1 has phoned home with engineering updates
Voyager 1 has again begun sending an intelligible signal back to Earth. Scientists hope they can prompt the craft to resume sending science data.
April 23, 2024
Moon Phases
April full moon – the Pink Moon – falls on April 23
The April 2024 full moon – on April 23 – is the Pink Moon and lies near the star Spica in the constellation Virgo. Find star charts here.
April 23, 2024
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