Hannah Reber, “snowmotion”, 2013, Video Study

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Chalcedony - Mamuju Area, Sulawesi Barat Province, Sulawesi Island, Indonesia

‘Antique Adventures’ limited edition screenprint set

LIGO scientists detected a third gravitational wave from two colliding black holes.

This week, scientists using the Laser Interferometer Gravitational-Wave Observatory, or LIGO, announced that they had detected another gravitational wave—the third ripple observed since September 2015. The findings were published in the journal Physical Review Letters.

The source of this most recent gravitational wave is a black hole 49 times larger than our sun that was formed by two colliding black holes located 3 billion light-years away. The data indicates that the spin of one or both of the black holes may have a tilted orbit, which can reveal clues to their origins. Theoretical astrophysicist Priyamvada Natarajan explains how this finding sheds light on black hole formation, and how it affects our understanding of general relativity and dark matter. Listen here. 

[Image credit: LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet)]

Counting the stars in the universe  is like trying to count the number of sand grains on a beach, it’s not possible. Although estimates vary among different experts, the general consensus is that there are at least between 100 billion and 200 billion galaxies in our universe. Think about that for a moment, and now throw in billions of stars in each galaxy! (source) This number could very easily be in the trillions for all we know.

A team of scientists gathered data on more than 8000 galaxies that surround the one we live in, also mentioned above, the Milky Way galaxy. They mapped each galaxies movement and position in space and discovered that the Milky Way galaxy is part of one giant system that contains a number of other galaxies, referred to as a supercluster.

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