Cosmology Why isn’t dark energy considered the “fifth force” in the way gravity, electromagnetism, weak nuclear, and strong nuclear are forces?
Exoplanets Ask Astro web extra: Has anyone pointed a telescope toward Alpha Centauri to see if there are planets only 4 light-years away?
Exoplanets Ask Astro web extra: Do Kepler’s laws apply to all extrasolar planet systems or just our solar system?
Science Ask Astro web extra: Will all white dwarfs, regardless of the class of star that produced them, eventually become black dwarfs?
