4. Dark Matter May Be Disappearing
Dark matter seems immortal and ever present, but a new monkey wrench in the gears paints dark matter as an unstable entity.
Fluctuations detected 300,000 years after the big bang didn’t match the speed of expansion of the universe given by models. This can be explained by decaying dark matter, which existed at the dawn of time but has since decayed into neutrinos or hypothetical particles.
The analysis says the current universe is 5 percent poorer in dark matter because some of it decays and some of it doesn’t. These unstable constituents may have all died out after the first several hundreds of thousands of years. Then again, maybe they didn’t because they may still be decaying and constantly changing the layout of the future universe.
3. The First Exomoon?
The spaceborne Kepler spacecraft has discovered thousands of exoplanetsbut no exomoons, which might be because they’re hiding around the planets farthest out from their stars.
Recently, Twitter broke the news that astronomers may have detected the first extrasolar moon. They discovered a planet candidate, Kepler-1625 b, which obscures a curious amount of light from its star.
The lopsided light dip outlines Kepler-1625 b as a heaving Jupiter-size body with a Neptune-size companion moon. Astronomy is finally on the brink of glimpsing alien moons. This means a significant boost in the search for habitable bodies, though further review with Hubble is necessary to consolidate the claim.