A researcher recorded sounds of the aurora – cracks and pops – during moderate geomagnetic activity even when there was no aurora visible.
The post You can hear an aurora (even when you canât see it) first appeared on EarthSky.
Ursa Major the Great Bear is in Northern Hemisphere skies and is home to the asterism of the Big Dipper, which you can use to find other constellations.
Did alien technology crash into the Pacific Ocean in 2014? Despite disagreement from colleagues, Harvard astronomer Avi Loeb says it’s possible.
The post Did alien technology crash in Pacific in 2014? Harvard astronomer says âmaybeâ first appeared on EarthSky.