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Dark matter, a mysterious substance … What is it?
What is dark matter? It doesn't emit light. It hasn't been directly observed. Yet it appears to exist and to exert a major influence on galaxies.
March 22, 2024
Dark matter study of dwarf galaxies hints at a ‘signal’
Researchers studied nearby, dark-matter dominated dwarf galaxies. They were looking for gamma rays resulting from dark matter annihilation or decay.
March 22, 2024
Milky Way season is back! See photos here
The Milky Way is once again rising in the early morning sky. Astrophotographers are taking the opportunity to capture great photos of our home galaxy.
March 21, 2024
Jupiter’s stormy weather on display in new Hubble images
NASA's Hubble Space Telescope has sent back new images of Jupiter's stormy weather. Hubble monitors the atmospheres of all the giant planets every year.
March 20, 2024
Possible hycean world found by Webb telescope
NASA's Webb Space Telescope has discovered a possible hycean world, with a deep hydrogen atmosphere and a global water ocean. Or is this world too hot?
March 20, 2024
On the equinox, are day and night equal?
Day and night are mostly equal on the equinox. There's a bit more daylight because the sun is a disk, not a point, and Earth’s atmosphere refracts sunlight.
March 19, 2024
Titanosaurs were the biggest land animals Earth’s ever seen
Titanosaurs thrived globally after the extinction of their more famous relatives. They had over 100 species ranging from massive to relatively small.
March 18, 2024
Voyager 1 spacecraft has sent a (partly) decipherable message
The Voyager 1 spacecraft started sending gibberish back to Earth in November. Now engineers have sent it a "poke" and received a message they can decipher.
March 18, 2024
Are solar storms dangerous to us on Earth?
Activity on the sun affects Earth's magnetic field. It can cause geomagnetic storms and can create beautiful auroras. Are these solar storms dangerous?
March 18, 2024
Pieces of asteroid Bennu now on display for YOU!
Would you like to see a pristine sample of asteroid Bennu? Small fragments are now on display in Arizona, Texas and D.C. Learn more here.
March 17, 2024
