![]() But no one had dared to dream we might find one in our own backyard. All of which explains why cosmologists have been scouring the universe for them. They might even comprise dark matter, the mysterious substance that holds galaxies together. Primordial black holes would give us a new window onto the early universe. If he is right, it would be a stunning discovery. For example, our Sun would become a black hole if its mass was contained. “The observations we have can’t tell us what that object is.”īut if not a planet, then what? Scholtz suspects it could be something even more exotic: a primordial black hole, one forged in the big bang. The only requirement is that its physical size is less than the Schwarzschild radius. “All we know is that there’s an object of a certain mass out there,” says Jakub Scholtz, a theorist at Durham University in the UK. Or, it could be bombarded with an unthinkable amount of cosmic. The problem is that no one can imagine how a planet big enough to do that could form so far from the sun. Our planet could be torn apart by the tidal forces from the black hole consuming our Sun. ![]() They believe that this hypothetical world, known as Planet Nine, betrays its presence by the way its gravity has aligned the orbits of a group of these small, icy bodies. In the process, some have come to suspect that something bigger is lurking out there: a planet several times the mass of Earth. ![]() Most astronomers think it is inhabited by a population of small, icy worlds similar to Pluto, and several groups have dedicated themselves to tracking down these dwarf planets. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. BEYOND the giant planets of the outer solar system lies a vast wilderness. ![]()
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