Why Does It Get Dark At Night - The Average Scientist

Why dark matter's no-show could mean a big bang rethink

The Milky Way has a mass of 1.5 trillion suns. Most of it is mysterious dark matter. - Vox

How People Stay Happy in the Norewegian Town Where the Sun Doesn't Rise - The Atlantic

The scientists who only come out at night…, Science

Scientists solve mystery of unexplained 'bright nights

Goodnight Science: a loving parody of Goodnight Moon : Courtney, Elizabeth: : Books

Opinion: Bright Nights, Big Problems

Scientists at Fermilab close in on fifth force of nature

Why Does It Get Dark At Night - The Average Scientist

Why does the sky get dark at night?

Seeing the Invisible: A short history of the scientific evidence of dark matter - Science in the News

Less clumpy' universe may suggest existence of mysterious forces, Astronomy

Why Is The Sky Dark At Night?