The vibrant purple night glow is a striking sight, but scientists are intrigued for another reason. STEVE is an entirely new phenomenon, different from the aurora events that it has previously been associated with.
NASA will create colorful artificial clouds in the sky in order to study the Earth's ionosphere. They will launch canisters filled with vapor and chemicals that are expected to react when they come in contact with sunlight.
A fireball lit up the night sky in Arizona last June 2. Experts say that the 10-foot asteroid's collision with the Earth's atmosphere created the fireball illuminating the sky which turned night into day for a few seconds.
NASA recently discovered that low-energy secondary electrons have an unexpected role in creating Northern Light shows.
The oldest stars in the sky aren't so old after all. They actually lit up the Universe more than 100 million years later than scientists previously thought, according to a new study.