8. Speaking of sunlight, it’s composed of approximately 40 percent light, 50 percent heat, and 10 percent ultraviolet ...

For a star with absolute magnitude of –5.0 to have an apparent magnitude of 18.5, it would have to be incredibly far away.

Bring a red flashlight, download the free Star Hoppers app, and look up – can you spot stars, planets and other celestial ...

The star that spawned the nova is usually too dim to see with the naked eye, boasting an apparent brightness — or magnitude — of +22.3.