Ice floats because it is about 10 percent less dense than liquid water. When water freezes, its molecules lock into an open lattice that spreads them apart. This oddity k...
On October 2, 2026, three Indian companies had payloads deployed from a SpaceX Falcon 9 rideshare flight called Transporter-18. One senses heat from space, one runs AI on...
Earthquakes happen when stress builds up in Earth's crust and the rock suddenly slips along a fault. Here is how Earth's layers and moving tectonic plates cause this, wha...
Four astronauts from Crew-13 entered the International Space Station on October 1, 2026. NASA says they will grow human tissues from stem cells, study blood flow in space...
Many people think summer happens when Earth is closer to the Sun. That is wrong. Seasons come from the tilt of Earth's axis, which changes how directly sunlight hits each...
The Moon does not change shape. What changes is how much of its sunlit half we can see from Earth as it orbits us. Here are the eight phases in order, why a full cycle ta...
Sunlight looks white but contains every colour. The air scatters short blue waves far more than long red ones, so we see a blue sky by day and reds at sunset. Here is the...