3.6K views · 355 reactions | • New NASA Visualization Probes the...

• Rethinking Cosmology • Universe Expansion May Not Be Uniform 8.4.2020 • A new study using galaxy clusters examines whether the Universe is "isotropic," or the same in all directions. • Galaxy clusters are enormous structures that astronomers can use to measure important cosmological properties. • The latest result uses X-ray data from Chandra and XMM-Newton of hundreds of galaxy clusters. • The cluster observations suggest that the Universe may be different depending on which way astronomers l

• Vision Across the Full Spectrum: The Crab Nebula (Neutron Star), from Radio to X-ray • The Crab Nebula (Messier 1) is the remnant of a supernova that exploded in the year 1054 AD. This mysterious "new star," as early sky watchers called it, was observed around the world and most notably recorded by Chinese astronomers. The supernova was triggered when the progenitor star abruptly collapsed onto its iron core, and rebounded to expel most of its layers of gas into a blast wave. This wave is seen

4.3K views · 360 reactions | Twenty years ago, astronauts went to upgrade the Hubble Space Telescope in space for the third time. Take a look back at our archived footage from this mission to relive these iconic and historic moments for yourself: https://go.nasa.gov/34K3bkN | NASA's Hubble Space Telescope | Facebook