What exactly is a black hole?

What is a black hole? In an article that has just appeared in the journal Nature Astronomy, LMU philosopher Erik Curiel shows that physicists use different definitions of the concept, depending on their own particular fields ...

dateFeb 14, 2019 in Astronomy
shares1031 comments 121

Gravitational waves will settle cosmic conundrum

Measurements of gravitational waves from approximately 50 binary neutron stars over the next decade will definitively resolve an intense debate about how quickly our universe is expanding, according to findings from an international ...

dateFeb 14, 2019 in General Physics
shares897 comments 5

'Old' sperm produces healthier offspring

Sperm that live for longer before fertilising an egg produce healthier offspring—according to new research from the University of East Anglia and Uppsala University in Sweden.

dateFeb 14, 2019 in Evolution
shares211 comments 0

Where is the universe hiding its missing mass?

Astronomers have spent decades looking for something that sounds like it would be hard to miss: about a third of the "normal" matter in the Universe. New results from NASA's Chandra X-ray Observatory may have helped them ...

date11 hours ago in Astronomy
shares555 comments 15

Giant flare detected on an L dwarf

European astronomers have spotted a giant white-light flare on the ultracool L dwarf designated ULAS J224940.13-011236.9. The newly detected flare is one of the largest flares ever observed from an ultracool dwarf. The discovery ...

dateFeb 14, 2019 in Astronomy report
shares173 comments 0