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Brightest Stars
Sun
Sun news May 20, 2024: Auroras possible tonight. Sun activity moderate
Sun news for May 20, 2024. There are chances for auroras tonight with possible G1 (minor) geomagnetic storm. Sun activity is moderate with 3 M flares.
May 20, 2024
Astronomy Essentials
Tonight
Visible planets and night sky guide for May
Visible planets and night sky guide for May 2024. Tonight (May 20), see the waxing gibbous moon near the bright star Spica.
Human World
Sun
Will solar flares destroy modern civilization? Nah
David Wallace of Mississippi State University talks to Deborah Byrd about solar flares and the impact a big storm from the sun would have on Earth today.
May 19, 2024
Space
New evidence for Planet 9 at the fringes of our solar system
Researchers said the bunching of small objects beyond Neptune fits perfectly with the existence of a Planet 9 hiding on the outskirts of our solar system.
May 19, 2024
Space
Mars craters pop in new images from ExoMars
Mars craters pop in these new images showcasing the diversity of impacts across the red planet. ESA's ExoMars mission took these images. See them here!
May 19, 2024
Sun
Among solar storms, the one causing the Carrington Event was BIG
Massive solar storms could damage the power grid, disrupt the internet, affect the ability of GPS and create auroras that reach toward the equator.
May 19, 2024
Astronomy Essentials
What is a galaxy? All you need to know about galaxies
What is a galaxy? We live in a galaxy called the Milky Way. But there is so much more to know about these grand and glorious star islands in space!
May 19, 2024
Astronomy Essentials
Constellations and signs: What’s the difference?
What is the difference between signs of the zodiac and constellations of the zodiac? Astronomer Guy Ottewell illustrates and discusses this difference.
May 19, 2024
Brightest Stars
Spica, the bright beacon of Virgo, is 2 stars
Spica is a scorching-hot pair of stars, whirling very closely around one another. One of them may go supernova someday. It's the brightest star in Virgo.
May 19, 2024
Earth
Crepuscular rays are sunrays in twilight skies
Crepuscular rays form around twilight when particles in the atmosphere reflect the sun's light beams toward our eyes. See photos of the phenomenon here.
May 18, 2024
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