gravitational lensing
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Hubble may have spotted the most distant star to date
The Hubble Space Telescope may have spotted the most distant star to date — 12.9 billion light-years away.
Hubble telescope helps find six 'dead' galaxies from the early universe
The Hubble telescope and ALMA have found six 'dead' early galaxies that stopped forming stars unusually quickly.
X-rays help astronomers detect spinning black holes
It can be tricky to measure the spin of a black hole, particularly when it's hard to see them, but astronomers have pulled off just such a feat. They've gauged the spins of five supermassive black holes through a combination of data from the Chandra X-ray Observatory and gravitational lensing, or the use of gravity from celestial bodies to magnify very distant objects.
