Aug. 22, 2025 — Astronomers using AI have captured a once-in-a-lifetime cosmic event: a massive star’s violent death triggered by its black hole companion. The explosion, known as SN 2023zkd, not only ...

Oct. 17, 2025 — Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks. A unique imbalance in potassium isotopes points to remnants of ...

For the first time in his second term, President Trump is imposing new sanctions, but they may not shift the course of Russia’s war in Ukraine. By Neil MacFarquhar The Interior Department also said it ...