"If the effect is real and scaling behaves the way our equations say, then the possibility becomes real," Chyba told Newsweek ...

Humans discovered the curvature and rotation of the Earth thousands of years ago, dating back to ancient Greece. Since then, scientists have only discovered more evidence to prove this is true ...

An animation by planetary scientist James O'Donoghue reveals that Earth has two types of day: sidereal days and solar days. The sidereal day happens each time Earth completes a 360-degree rotation ...

If Earth were to stop spinning but continue to orbit the sun, a "day" would last half a year, and so would the night. It could warm up much more during the day and cool down much more during the ...

Google has done its bit to celebrate Earth Day 2015, the largest civic event in the world, with one of its trademark doodles. Millions of people across the globe celebrate Earth Day on April 22 ...

The Earth at night, a mosaic made from Suomi NPP satellite data. Click to enterranate. Image credit: NASA Earth Observatory/NOAA NGDC. Tweet Share Share Comment ...

Is the rotation speed of Earth's core slowing down? Danish seismologist Inge Lehmann discovered the planet's inner core in 1936. Since then, scientists have continued to debate its rotation speed ...

NPR's Ayesha Rascoe talks to John Vidale, professor of earth sciences at the University of Southern California, about new research suggesting the rotation of Earth's inner core may be slowing down.

When Our Magnetic Field Flips. By Rick Groleau; Posted 11.18.03; NOVA; Every so often—every 250,000 years on average—the Earth's magnetic poles reverse polarity.

A radar image of the near-Earth asteroid 2015 TB145, which passes Earth on Saturday at 480,000 km distant. Seriously, of all days to see a giant flying space skull whizzing past our planet … ...