Scientists have discovered that unusually massive black holes appear to be absent from the Milky Way’s diffuse outer halo. The discovery could spell bad news for theories that the most mysterious form of “stuff” in the universe, dark matter, is made up of ancient black holes that formed in the first moments after the Big … Read more
NASA’s Transiting Exoplanet Survey Satellite (TESS) may have discovered its first free-floating or “orphaned” planet. That’s a planet wandering through the cosmos, without a star, all alone. The potential discovery shows that TESS can use a phenomenon first suggested by Albert Einstein more than 100 years ago to detect these so-called rogue planets. Despite the … Read more
Two supernovasS in a galaxy, and a galaxy so far away that we see it as it was 10 billion years ago, could be crucial in helping to reveal the expansion rate of the universe. This is a measurement that has caused some tension within the scientific community. The galaxy and the two supernovae were … Read more