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Nov 24, 2015 07:00 AM ET // Ian O'Neill
To celebrate 100 years since Einstein formulated his theory of general relativity, we celebrate the beautiful observations created by a spacetime phenomenon known as gravitational lensing.
Nov 19, 2015 09:01 PM ET // Ian O'Neill
While measuring the speed of stars whirling around a nearby dwarf galaxy, astronomers have realized that a reservoir of dark matter may be lurking within.
Nov 19, 2015 07:00 AM ET // Ian O'Neill
Astronomers have detected something baffling at the furthest frontiers of our observable universe: lots of massive galaxies that shouldn't even exist.
Nov 17, 2015 06:58 PM ET // Ian O'Neill
Shimmering deep inside a cosmic supervoid is MCG+01-02-015, a pristine galaxy that is the undisputed galactic loner of the universe.
Oct 16, 2015 12:55 PM ET
Although technically you can't "weigh" a star, since it will change relative to gravitation, astronomers CAN work out just how much matter is inside the bright bulbs in our sky and beyond.
Sep 16, 2015 04:27 PM ET // Ian O'Neill
After surveying some promising galactic candidates, an astronomer has concluded that there is little to no evidence for any super-advanced alien civilizations in our local universe.
Aug 31, 2015 02:50 PM ET // Elizabeth Howell
See just how well Hubble is doing after 25 years in orbit.
Aug 28, 2015 05:58 PM ET // Ian O'Neill
In a galaxy, 600 million light-years away, a black hole deathmatch is ripping up spacetime, exposing some fascinating dynamics at the heart of a powerful quasar.
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