Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Earth is illuminated against the blackness of space in this ...

Planet Earth is spinning a little faster today — resulting in one of the shortest days of the year. But the change will be so minuscule you won't even notice. We're talking even less time than the ...

The long-awaited market rotation is here, and it has catapulted the small-caps and mid-caps sharply higher over the last 2 weeks. It even sent the large-cap Dow to new all-time highs. Until recently, ...

Although the Earth completes one full rotation in 86,400 seconds on average, that spin fluctuates by a millisecond or two every day. Before 2020, the Earth never experienced a day shorter than the ...

Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...

Sector rotation is a strategy based on moving money between stock market sectors to stay ahead of booms and busts. But does the research say it works? NerdWallet is committed to editorial integrity.