For years a Hopkins biologist enlisted Baltimore kids to catch fireflies for his research on how the bugs convert chemical energy into light.

How the pioneering scientist, and namesake of an enormous new telescope, forced astronomers to rethink the universe.

For the first time, scientists have used Earth-based telescopes to look back over 13 billion years to see how the first stars ...

"Using the new common signal, we can determine how much of what we're seeing is cosmic glare from light bouncing off the hood ...

"Let's See!" is an interactive exhibit about eyes at the Glazer Children's Museum. Kids can explore their own eyes up close, ...

For the first time, astronomers have used a ground-based telescope to observe polarized microwave light from the universe's ...

Physicists prove long-held theory light can be made from nothingness of vacuum - Researchers say simulation experiment may ...

But the universe’s initial moments after the cataclysmic explosion, including how its earliest stars influenced the light we ...