Earth’s orbit around the Sun is not circular, but an ellipse. The perimeter of Earth’s orbit is roughly 584 million miles ...

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Discover the Sun’s incredible heat, its layers, and what fuels it. Explore ExtremeTech’s in-depth article and get closer to ...

The probe will orbit the sun "close enough to pass inside a solar eruption, like a surfer diving under a crashing ocean wave, ...

The Martian calendar, established in 1955, counts years from the "great dust storm of 1956," a significant event in Mars' ...

K2-360 b has a radius just shy of 1.6 times that of Earth, giving it a volume four times as large. Its mass, though, is 7.7 ...

The movements of the planets in the Solar System are pretty difficult to get your head around, even before we get started on the dark matter which seems to keep galaxies together and rotating with ...

In recent years, astronomers have developed techniques to measure the metal content of stars with extreme accuracy. With that ...

We're showing that, everywhere we look now, there was some sort of magnetic field that was responsible for bringing mass to ...

A dwarf planet is a celestial body in direct orbit of the Sun that is massive enough that its shape is not controlled by gravitational forces, but has not ‘cleared its path’ (more on that later).

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

A distant white dwarf hosts an Earth-like planet in an orbit that might be similar to Earth’s if it survives the Sun’s red giant phase.