Wormholes are theoretical tunnels that bend the fabric of spacetime, linking distant points in the universe and potentially enabling faster-than-light travel. They come from solutions in General Relativity, first described by Albert Einstein and Nathan Rosen as Einstein–Rosen bridges.
While mathematically possible, they’re likely unstable and would require exotic matter to stay open. So far, there’s no evidence they actually exist.
DID YOU KNOW: The Moon is about 400 times smaller than the Sun…
yet it also happens to be almost exactly 400 times closer to Earth.
This incredible coincidence makes the two appear nearly identical in size in our sky
The Sun's diameter is about 108 times Earth's diameter. The Earth-Sun distance is about 108 times the Sun's diameter. The Earth-Moon distance is about 108 times the Moon's diameter.
The Most Mysterious Object in The Solar System: Sedna
Sedna is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun far beyond the orbit of Neptune. It was discovered in 2003, and is roughly 1,000 km in diameter.
Sedna has one of the strangest orbit in the whole solar system with an orbital period of over 11400 years. Meaning that Sedna will come back in ~13000.
Imagine how many objects are over there and are still not discovered yet.
Sedna's orbit is one of the main reasons why many scientists think that Planet 9 exists.
🚨: Scientists have recently discovered that breathing is tightly linked to how our pupils change size, revealing a previously unknown body rhythm shaping vision.
Missing updates from the Artemis II crew? We have other humans in space you can follow!
Meet the NASA astronauts currently aboard the @Space_Station in the thread below 👇
There are more stars in the observable universe than grains of sand on earth.
Estimates suggest there are roughly 7.5 quintillion grains of sand, while scientists estimate there are around 1 sextillion to 1 septillion stars in the observable universe, that is 23 zeros.
This means there are thousands of stars for every single grain of sand on Earth.
Did you know that the Milky Way is even milkier when viewed from the Southern Hemisphere? This is because from the southern side of our planet, we get a clearer, more direct view of the dense galactic core.
Here’s a look at the Milky Way starting over the Southern Ocean (between Australia and Antarctica) from our @SpaceX Dragon window, complete with some aurora (Southern Lights) and fleeting Starlink satellites. Enjoy the view!