light

The-speed-of-light

How Astronomer Accidentally Discovers the Speed of Light 347 Years Ago

Ancient astronomers struggled to understand the concept of the speed of light. Before its discovery, some researchers thought that the speed of light was either extremely fast to measure or infinite. On Nov. 21, 1676, Ole Rømer, a Danish astronomer discovered the speed of light. Rømer accidentally discovered this while studying Jupiter’s volcanic moon, Io. […]

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galaxy light

Hubble Space Telescope Finds 11-billion-year-old Galaxy Light Hidden in a Quasar’s Glare

Astronomers used the Hubble Space Telescope to spot an 11-billion-year-old galaxy light hidden in a quasar’s glare. While making the discovery, the researchers deployed a tricky means of watching the light absorbed instead of observing the light emitted by the galaxy. On Earth, we notice light bulb based on the light it emits. Astronomers deploy

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