Lawrence Berkeley National Laboratory, Berkeley, California, Author at Astronomy.com

Exotic Objects, Stars

Supernova twins

BOSS makes the most precise measurement yet of the universe’s expansion

Exotic Objects, Stars

Standard-candle supernovae are still standard, but why?

Cosmology, Science

Does antimatter fall up or down?

Exotic Objects, Robotic Spaceflight, Stars

The farthest supernova yet for measuring cosmic history

Exotic Objects, Science

Where do the highest-energy cosmic rays come from?

Cosmology, Science

Closest type Ia supernova in decades solves a cosmic mystery

Scientists discover an “instant cosmic classic” supernova