SN H0pe could help solve the Hubble tension because it is a type 1a supernova, which astronomers refer to as a "standard candle" - an incredibly reliable reference point from which we can measure the universe's expansion, Siegel wrote. ![]() It includes 1.8-micron light shown in blue, 2.1-micron light shown in green, 4.3-micron light shown in yellow, 4.6-micron light shown in orange, and 4. The conundrum has even caused some researchers to declare it a crisis in cosmology. The Webb image observes the field at depths comparable to Hubble revealing galaxies of similar faintness in just one-tenth as much observing time. This problem has confused scientists for decades because there is no clear reason why one method should produce a different result from the other, Siegel wrote. But the second method, which involves measuring how far specific objects, such as galaxies and supernovas, are moving away from us, consistently comes out with a slightly higher value. The first method, which involves measuring expansion using the cosmic microwave background (CMB) - leftover radiation from the Big Bang that was first detected in 1964 - comes out with one value for the Hubble constant. The James Webb Space Telescope, left, is 100 times more. The Hubble tension is based on a discrepancy between the two main ways of estimating the rate of the universe's expansion, known as the Hubble constant. Webb: New NASA telescope reveals never-before-seen details from the early universe, within 400 million years after the Big Bang. 20, astrophysicist and science communicator Ethan Siegel, who was not involved in the study, wrote that SN H0pe could help solve a longstanding inconsistency about the expansion of the universe - the "Hubble tension." ![]() In this example, the light of a galaxy travels through curved space-time surrounding a galaxy cluster. ![]() A diagram that shows how gravitational lensing works.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |