Why Does It Rain Molten Iron on a Planet 640 Light-Years Away?
Imagine rain that is not water but liquid metal. On the exoplanet WASP-76b, about 640 light-years …
Why Are Two Giant Bubbles Stretching 50,000 Light-Years Across the Milky Way?
Why do two enormous, invisible structures rise from the center of our Milky Way? They are called t…
Have Astronomers Finally Discovered a Green Star? The Strange Science Behind Its Color
Astronomers have finally found compelling evidence for a green star—but not the sort of green Sun …
Can New Planets Form After Their Stars Have Died? Hubble's Surprising Discovery
Can new planets form after their stars have died? Possibly. A study published on October 5, 2026, …
What Is the Cosmic Web That Fills the Universe?
The cosmic web is the universe's enormous three-dimensional network of matter, shaped into lon…
What Lies Inside the Moon's Craters That Never See Sunlight?
Deep inside some lunar polar craters, the Sun never reaches the ground. Those dark floors contain …
What If a Rogue Planet Entered Our Solar System? Could Earth Survive?
Could an unbound planet wander into our solar system and destroy Earth? Yes, a sufficiently close …
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