Explore the fundamental laws of nature, major scientific theories, breakthroughs, and the impact of science on society.
What if a total solar eclipse could settle a fight between Newton and Einstein? In 1919, British astronomers used one to test whether the Sun bends starlight, and the result changed physics forever. The setup was clever: compare stars near the eclipsed Sun with night-sky reference plates. Eddington ...
ViewTo restart, a rocket engine must first solve the problem of its fuel, which floats aimlessly in zero gravity. Small thrusters fire briefly, creating a gentle push that settles the propellants at the bottom of their tanks, ready for the main engine. With the fuel in place, an ignition system provides...
ViewDesert glass is natural glass made when sand is suddenly fused by lightning or by the heat of a meteor impact, then cooled into rock-like material. With lightning, the heat is extreme enough to melt silica-rich sand in under a second, leaving hollow glass tubes called fulgurites beneath the surface....
ViewLong ago, the Moon likely had a weak internal dynamo, and Apollo samples show that some rocks recorded that ancient field before it vanished. Later, huge impacts may have vaporized surface material into plasma, briefly strengthening that weak field, while shock waves helped nearby rocks lock in the ...
ViewOn July 22, 1962, Mariner 1 rose from Cape Canaveral as NASA's first attempt to send a spacecraft close to Venus. But soon the rocket veered off course, as a guidance antenna problem and a software error combined to confuse its steering system. At 293 seconds after liftoff, the Range Safety Officer ...
ViewSpace news in 2026 reads like satire: a lemon-shaped planet, a solar radio burst that would not quit, and telescopes hunting invisible neutron stars. Here are the headlines that sound fake but are very real. Lemon planet, meet black widow system: PSR J2322-2650b orbits a pulsar every 7.8 hours, has ...
ViewVeined octopuses carry coconut shells across the ocean floor to build portable protective shelters later. They use their siphons to launch silt and shells at other octopuses to express irritation. Blanket octopuses tear off venomous jellyfish tentacles and wield them as weapons against predators. Tw...
ViewEver wonder why you can remember a random trivia answer from years ago, but not what you studied for last week's exam? The secret is curiosity. When you encounter something that piques your interest, your brain basically goes into sponge mode. It activates the same reward circuits that light up when...
ViewEvidentiality Yes: some languages require an evidential marker for source of info, like saw, heard, or inferred. Tiny grammar, big receipts 📚✨ How would that change your speech?...
ViewOnly humans and New Caledonian crows make hooked tools in the wild 🪶✨ First: pick the right twig, then cut or pull it into a neat hook 🪵✂️ That hook is not for decoration. It helps the crow snag insects from holes much faster 🐛⚡ The wild plot twist: juveniles learn from parents and their tool tra...
ViewFine dust particles in the Martian atmosphere scatter blue light more efficiently than other colors. Blue light stays closer to the Sun while red and yellow light scatter widely across the sky. Mars has a blue sunset while Earth has a red one because of different atmospheric compositions. NASA rover...
ViewCan cuttlefish pass a marshmallow test? Yes. In a 2021 study, six common cuttlefish were given a choice between an immediate, less preferred snack and a better one that arrived after a delay. All six were willing to wait for the better reward, and some held out for as long as 130 seconds. The cuttle...
ViewLevel 1 (true_false): Challenge: Space is totally silent, so you can never hear a thing out there. Answer: False Context: While space is a vacuum, regions with gas and plasma can transmit low-frequency sounds that NASA can record and translate for us to hear. Level 2 (multiple_choice): Challenge: If...
ViewCuriosity is basically your brain’s “missing piece” detector: when you notice a gap in what you know, that gap creates tension or uncertainty, which pushes you to seek information and fill it. Neuroscience studies in the sources link curiosity to the brain’s reward system, especially dopamine-relat...
ViewFrom their orbit high above the Earth, satellites send thousands of microwave pulses down to the ocean every second. They precisely time how long it takes for these signals to bounce off the surface and return, calculating the distance to the sea. While a single measurement is accurate to a few cent...
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