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Space
Exploring Mars’ Grand Canyon with a swarm of robotic drones
Researchers in Germany are developing a mission for exploring Mars' Grand Canyon, Valles Marineris. It would involve a swarm of robotic drones.
September 25, 2024
Astronomy Essentials
Tonight
Visible planets and night sky guide for September
Visible planets and night sky guide for September 2024. Look for the moon near Mars and the stars Castor, Pollux and Procyon after midnight through dawn.
Constellations
Octans and Apus circle the south celestial pole
Octans and Apus are 2 constellations that you have to be in the Southern Hemisphere to see. Plus, Octans is home to the south celestial pole.
September 25, 2024
Space
Is cosmology at a tipping point? Is new physics ahead?
The standard model has done an exceptional job explaining cosmology. But there are problems. Will new observations be a tipping point toward new physics?
September 24, 2024
Human World
Space
SKA telescope gets its ‘1st fringes’
The SKA telescope SKA-Low has successfully measured a correlated signal using 2 of its stations. Astronomers call such a measurement "1st fringes."
September 24, 2024
Sun
Sun news September 25: Early arrival of the expected chunk of solar stuff
Sun news for September 25, 2024. Early arrival of the chunk of solar stuff. A G1 (minor) geomagnetic storm was observed starting at 0:00 UTC on September 25.
September 24, 2024
Brightest Stars
Delta Cephei helps measure cosmic distances
Delta Cephei is an inconspicuous variable star in the northern constellation Cepheus the King. This important star helped establish the cosmic distance scale.
September 24, 2024
Earth
Is there a threat of landslides where you live? See the map
A new map from the USGS shows which areas of the United States are susceptible to the threat of landslides. See the map and read more about landslides.
September 23, 2024
Space
Comet A3 is brightening. Will it be the comet of the year?
Comet A3 Tsuchinshan-ATLAS survived its rumored disintegration and may be the brightest comet of the year this September and October. Finder maps here.
September 23, 2024
Astronomy Essentials
2024 September equinox: All you need to know
The September equinox is here! Autumn for the Northern Hemisphere. Spring for the Southern Hemisphere. Here's all you need to know.
September 22, 2024
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