Learn how we know the Earth is round, and the science behind the shape of our gravitational field.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Earth is today at aphelion, the point in its orbit at which ...

Earth is at its farthest point from the sun on July 3. So why are temperatures so high across the U.S.? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Yeimy J. Rivera receives funding from NASA's Parker Solar Probe project through the SAO/SWEAP subcontract 975569. Tatiana Niembro receives funding from NASA's Parker Solar Probe project through the ...

The Sun seems like a perfectly reliable, unchanging presence in the daytime sky, but it’s not. Intense heat and pressure in its core fuses hydrogen atoms into helium, fueling the cosmic fire that ...

From changes in solar activity to shifts in climate and atmosphere, the study of Earth’s future often reveals as much about the present as it does about the distant end. Researchers using a NASA ...

Earth has a newly discovered—albeit temporary—companion in its journey around the sun. In research published this month in Research Notes of the AAS, a non-peer reviewed publication from the American ...

"Jupiter didn't just become the biggest planet — it set the architecture for the whole inner solar system." When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Astronomers have discovered a rare lemon-shaped planet called PSR J2322-2650b orbiting a city-size star. Found using NASA’s James Webb Space Telescope, the Jupiter-size world is stretched by extreme ...