This first light, as it's called, shows that all of the spacecraft's systems are working just as expected. "Based on the ...

The universe tells us its story mainly through light and other wavelengths of electromagnetic radiation. We learn about the planets, stars, and galaxies by their light—visible light, and also ...

At 2:26 a.m. on Friday, the moon enters into the total eclipse − known as totality. At this point, the only light from the Sun reaching the moon are red wavelengths, turning the moon a blood-red. This ...