In the opening scene of the 1941 mystery Citizen Kane, the eponymous protagonist, played by Orson Welles, clenches a snow globe in his hand as he utters his last word: “rosebud.” The glass-encased ...

The rate of human-produced light is increasing in the night sky by as much as 10% per year, making it difficult for astronomers to study the night sky. This article was originally published at The ...

Stargazers across the globe got the chance to see a total lunar eclipse - called a blood moon - on Sunday night and early on Monday. The moon turned a deep, dark red as the Earth passed directly ...