Sounds wild, right? According to a new study, stars have radiated 4x1084 photons since the start of the universe, 13.7 billion years ago. That's the number 4 with 84 zeros behind it. Read more.
Phlegraean Fields - one of Earth's most active and volatile volcanic regions - is readying for a catastrophic eruption, says new research - but not for thousands of years. Read more.
It's time to start planning ahead for the Geminid meteor shower. It's always reliable! But it might be extra special in 2018. Peak mornings December 13 and 14. Read more.
Cassiopeia - sometimes called The Lady of the Chair - is famous for having the shape of a telltale W or M. Look high in the north from the Northern Hemisphere, low in the north from the Southern Hemisphere. Read more.
The Double Cluster in Perseus - 2 star clusters, each containing supergiant suns - is near Cassiopeia on the sky's dome. You can sweep for this pair with binoculars. Tom Wildoner at The Dark Side Observatory in Weatherly, Pennsylvania, captured this photo this fall, with a telescope. Details here.
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