When you buy through links in our articles, Future and its syndication partners may earn commission. Composite visible-light and X-ray image of the galaxy cluster Abell 2390, showing the large area of hot, X-ray emitting gas within the cluster. | Credit: ESA/XMM-Newton/Euclid/Euclid Consortium/NASA By combining a new image of a giant image galaxy cluster with… Read More »
Scientists have discovered that the Milky Way’s diffuse outer halo is devoid of any unusually large black holes. The discovery could spell bad news for theories that suggest dark matter, the universe’s most mysterious “stuff,” is composed of primordial black holes that formed in the early moments after the Big Bang. Dark matter is confusing… Read More »
NASA’s Transiting Exoplanet Search Satellite (TESS) may have discovered its first free-floating or “orphan” planet. This is a planet wandering alone in the universe, without a star. The potential discovery suggests that TESS could use it to detect these so-called rogue planets, a phenomenon first proposed by Albert Einstein 100 years ago. Having discovered more… Read More »
two supernovaeS It could be vital in revealing the expansion rate of the universe in a galaxy, and in a galaxy so distant that we see it as it was 10 billion years ago. This is a measurement that has created some tension in the scientific community. The galaxy and two supernovae were imaged by… Read More »
A new theory proposes that dark matter consists of particles that interact strongly with each other through a method called “dark force.” If true, this could finally explain the extreme densities we see in dark matter halos surrounding galaxies. The existence of particles called self-interacting dark matter (SIDM) acts as an alternative to cold dark… Read More »