Content tagged "cosmic dust".
3 items (3 articles, 0 stories)
Just 0.55 light-years from Sagittarius A*, the supermassive black hole at the heart of the Milky Way, an aging giant star called IRS 3 keeps producing water and silicate dust in one of the galaxy's harshest radiation zones. JWST caught the moment. A story of the universe quietly making things, from SORABUMI.
Cosmic dust is the raw material of planets and our own bodies. In Sextans A, a primitive dwarf galaxy with just 3-7% of the Sun's heavy elements, JWST spotted stars making dust out of almost nothing but iron. SORABUMI unpacks the surprising answer to how the early universe managed to make dust at all.
Researchers melted 300 kilograms of Antarctic ice core spanning 80,000 years and found iron-60 — a radioactive element that can only be born in a supernova explosion. It turns out the region of space the solar system is currently passing through is the remnant of a star that once exploded.