The Sun is the most massive object in our solar system, which means it has the most gravitational influence on objects such as planets. In order for a satellite to orbit a planet, it has to be close ...

While the world will have to wait until 2026 for the next total solar eclipse, the cosmos promises plenty of other wow ...

The first eight weeks of 2025 present us with a striking lineup of evening planets. In order from west to east across the sky ... Venus reaches greatest elongation, 47° east of the sun, on Jan. 9. On ...

What is a "conjunction" or "square" in astrology? Here's a list of the most important aspects and what they mean.

A NASA spacecraft has made history by surviving its closest-ever approach to the Sun during the Parker Solar Probe mission, a project over six years in the making. The spacecraft was out of ...

Astronomers are often asked how the casual observer can distinguish planets from bright stars in the night sky.

NASA's Parker Solar Space Probe got closer to the sun than any other human-made object. NPR talks to the scientist behind the project, Nour Rawafi.

Pythagoras believed in reincarnation, remembered his past lives, and saw the soul as deeply connected to the cosmos.

Mars has two moons, Phobos and Deimos. Scientists still debate whether these came from asteroids that passed close into Mars' ...

Stars are born in stellar nurseries, molecular clouds of cold gas and dust. These clouds contain many times the mass of a ...