The stars in our galaxy come in a beautiful assortment of colors. We see supergiants such as Betelgeuse that have a warm red glow, and others like Rigel that shine […]
The post A Chartreuse White Dwarf Shows Some Stars Really Are Green appeared first on Sky & Telescope.
New simulations suggest that the planets' orbits will destabilize well before the Sun expands into its red giant phase.
The post The Solar System Has a New Life Expectancy, and It’s a Billion Times Shorter appeared first on Sky & Telescope.
Astronomers have found a distant fast radio burst whose signal has traversed much of the universe before arriving at Earth.
The post Fast Radio Burst Shatters Distance Record appeared first on Sky & Telescope.
The star at the heart of the oft-observed Helix Nebula powered a clumpy wind before it died. Now, new images capture these clumps’ dissolution into the space between stars.
The post The Helix Nebula is Hurling Clumps of Gas through Space appeared first on Sky & Telescope.
New analysis of observations taken in 2024 confirm a stellar companion for Betelgeuse in the constellation Orion.
The post New Images Confirm: Betelgeuse Has a Companion appeared first on Sky & Telescope.
Exploding stars have left their radioactive mark on our planet. Now scientists have found more evidence of a particularly violent event in Earth’s more ancient past.
The post Exploding Stars Sprinkled Ancient Earth With Radioactive Iron and Plutonium appeared first on Sky & Telescope.
New analysis reveals a tight relationship between two supernova remnants in the outer Milky Way.
The post Double Whammy: Binary Supernova in Gemini appeared first on Sky & Telescope.
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