The comet's green glow is caused by fluorescence of diatomic carbon (C2) when exposed to ultraviolet sunlight, not reflection ...

The overnight sensation leading NYC polls has a lot in common with another telegenic young politician who skyrocketed to fame.

Of the three November meteor showers, Leonids should be the most active. It is fed by the Tempel-Tuttle Comet, which can produce some dense debris clouds, resulting in very strong showers. Leonids is ...