I’m not sure whether it was elementary school science classes or Fred Flintstone’s Brontosaurus burgers that made the giant herbivore one of the most recognizable dinosaurs to me as a kid. But for ...

Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...

There is no danger of 2020 VN 40 colliding with Neptune, as the orbit of this distant world is very inclined with respect to ...

In a groundbreaking discoverypublished in The Planetary Science Journal, a team of astronomers led by the Center for ...

Pluto is inside Neptune’s orbit for a whopping 20 years. There’s also a period in its orbit when it’s actually closer to the sun than Neptune because of its shape. “Pluto’s orbit is very elliptical ...

On average, from the point of view of the sun, the Earth completes one full rotation around its axis every 24 hours or 86,400 seconds, give or take a few milliseconds. A millisecond (ms) is 0.001 of a ...

Here’s what you’ll learn when you read this story: Although the Earth completes one full rotation in 86,400 seconds on average, that spin fluctuates by a millisecond or two every day. Before ...

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, and Venus.

After successfully entering Earth’s atmosphere, a European spacecraft is lost "This partial success reflects both ambition and the inherent risks of innovation." ...

Astrochronology: A dating technique that uses cyclical variations in Earth’s orbit and rotation to provide a high-resolution chronological framework.