How sensors catch individual packets of light. Modern spectrometers rely on light acting a...
Capturing the echo of the beginning. This faint glow fills the sky in every direction, ser...
The ultimate proof that space is getting bigger. As galaxies race away, their light is str...
What are stars actually made of? By analyzing the ratio of the lightest elements, astronom...
The unique fingerprints of the elements. When light passes through a gas or is emitted by ...
When a galaxy's core shuts down the birth of new stars. The massive energy pouring out...
Light acting as both a wave and a bullet. Scintillation detectors turn incoming photons in...
Tracing the universe back to its hottest, brightest moments. The light we see today began ...
The engine room of a star. By crushing atoms together to form new elements, stars create t...