Magazine

Exotic Objects, Science

Does a black hole gobble up neutrinos, or do the neutrinos just breeze through the black hole as they do through everything else?

Galaxies

If galaxies are expanding away from one another, why are Local Group galaxies like the Milky Way and Andromeda moving toward each other?

Observing

Phil Harrington’s binocular universe: Meet the colorful Gemini twins

Stars

Why are neutron stars constrained to a diameter of 10 to 12 miles?

Science

Galaxy quest

Observing

Try the Messier Marathon

Galaxies

Simulated galactic crack ups

Galaxies

Galaxies collide in Andromeda

Science

A peculiar jewel of the north

Telescopes and Equipment

Make the BT70 binoculars “go-to”

Science

Angular distance and star color

Science

What will happen when the 100-plus-solar-mass star Eta Carinae dies?