The Euclid mission, which is due to be launched by the European Space Agency in 2021, will capture images of billions of distant galaxies to provide new insights into how gravity works in the depths of space.
- Dark matter clusters could reveal nature of dark energy
- The expanding universe
- Dark energy is the biggest mystery in cosmology, but it may not exist at all - leading physicist
Einstein’s famous theory, which he published in 1915, is widely considered to be the best way of explaining gravity. It essentially says that massive objects cause the fabric of space and time to curve, which causes other objects to fall towards them.
But while general relativity appears to be consistent with how scientists observe gravity behaving in our own solar system and galaxy, it begins to look less convincing on larger scales.
Observations of distant supernovae suggest that our universe is accelerating as it expands, although some scientists dispute this. For accelerated expansion to happen under general relativity requires the universe to be permeated by a mysterious, and so far undiscovered, ‘dark energy’ that is needed to drive the process.
‘If general relativity is modified, we may not need dark energy at all to explain what is going on.’
Professor Kazuya Koyama, University of Portsmouth, UK.
Source : https://horizon-magazine.eu/article/space-telescope-test-einstein-s-theories-about-gravity_en.htmlThank You for Visiting My Website Check Out Our New Products !