Since the 1970s, scientists have treated pulsars and magnetars as 2 distinct populations of objects. Now they think they might be stages in a single object's evolution. A new NASA ScienceCast has more.
New Horizons is boldly exploring where no spacecraft has before. It's the craft that swept past Pluto in 2015. Now it's preparing for its next encounter on January 1, 2019.
"What a dull name for the most accurate scientific theory known to human beings ... As a theoretical physicist, I’d prefer 'The Absolutely Amazing Theory of Almost Everything'."
Mysterious asteroid 2015 BZ509 - currently nestling in Jupiter's orbit - became less mysterious once astronomers realized it's an immigrant, captured from another solar system.
This object was likely born in the Asteroid Belt between Mars and Jupiter, then flung billions of miles to the Kuiper Belt on the edge of the solar system.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.