Smartphone app can detect hidden camera lenses from reflections

Sky Tonight app review

Astronomers discovered two previously invisible galaxies 29 billion light-years away. Their discovery suggests that up to 1 in 5 such distant galaxies remain hidden from our telescopes, camouflaged by cosmic dust. The finding changes perceptions of our universe’s evolution since the Big Bang.

Hard X-Ray Emission from White Dwarfs Reveals Their Hidden Companions