The asteroid belt holds about 3% of the Moon's mass, and it is mostly empty space. See the facts, the myths, Ceres and the missions…
The leading theory says a Mars-sized planet called Theia hit the young Earth 4.5 billion years ago. See the evidence, the puzzles and the rival…
The Moon is 384,400 km away on average and drifting off 3.8 cm a year. See how laser ranging measures distance to the millimetre, and…
Enceladus has a salty ocean with phosphorus and hydrogen. Titan has methane lakes and rich organic chemistry. Compare both moons and the missions heading there.
A voltage change made in 1965 caused an oxygen tank to explode 200,000 miles from Earth in 1970. Here's exactly what went wrong, and how…
From the "leopard spots" of Cheyava Falls to ancient river deltas and mysterious methane — here is everything scientists have discovered about the possibility of…
Discover what the James Webb Space Telescope has found since 2022 — from the earliest galaxies ever seen to exoplanet atmospheres and star-forming regions. Updated…
Pillar guide Page: Solar System & Planets Introduction In the search for life beyond Earth, astronomers focus on a crucial concept: the habitable zone, often…
Discover how the Big Bang created the universe 13.8 billion years ago. Learn about cosmic expansion, evidence, timeline, and what came before the beginning.
Understand Einstein's general relativity and how mass warps spacetime. Learn about gravity, black holes, GPS, and how this theory changed physics forever.