The Fastest Star: S2 orbits the supermassive black hole at the Milky Way’s center at an incredible speed of 7,000 km per second. That’s about 1/60th the speed of light!
Tabby’s Star Dimming: This star randomly dims by huge amounts, unlike anything we’ve seen before. Some even speculated it could be an alien megastructure, but no solid explanation exists.
Baryon Asymmetry: The universe has much more matter than antimatter, but according to physics, they should have existed in equal amounts. Why this imbalance happened is still a mystery.
Mars Methane Mystery: NASA detected methane on Mars, which could be a sign of microbial life. But methane levels keep changing, and we don’t know why.
Fast Radio Bursts (FRBs): These are sudden, intense bursts of radio waves from distant galaxies that last only milliseconds. Scientists still don’t know what causes them.
The Phantom Galaxy: Dragonfly 44 looks like a normal galaxy, but almost all of its mass seems to be invisible dark matter. No one knows why.
The Wow! Signal: In 1977, a radio telescope picked up a powerful signal from space. It lasted 72 seconds, and to this day, no one knows where it came from.
Oumuamua: In 2017, astronomers spotted a strange, cigar-shaped object from another star system passing through our solar system. Its true nature is still unknown.
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