Venus takes about 243 Earth days to complete a single rotation, and it does so in the opposite direction from nearly every ...

Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

There is interesting new work from Cool Worlds. A quasite is a conceptual space-based satellite system proposed by the Cool Worlds Lab (led by astronomer David Kipping), representing a hybrid or ...

When you look up at the sky on a sunny day, the Sun might seem like a bright spot, unchanging in the sky. But the Sun is a complex, dynamic celestial body, wrapped in electrical currents and magnetic ...