Planetariums were a hit with the public. Within decades, they had spread around the world – the first planetarium in the ...

In the 1700s, the orrery, a clockwork model of the Solar System, was developed. The word “planetarium” was invented to describe orreries that featured the planets.

The one-year chamber features an orrery, a mechanical model of the solar system, complete with not just planets but also interplanetary probes launched during the 20th century.

The Book of Revelation is a strange book to read. As someone once said about the Troubles in Northern Ireland: 'If you're not ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

In space terms, our solar system is like a calm pond, but even the smallest pebble can cause ripples. According to the study in Icarus, a passing star within 10,000 astronomical units (AU) could ...

In 1977, NASA launched the Voyager probes to study the Solar System's edge, and the interstellar medium between the stars. One by one, they both hit the "wall of fire" at the boundaries of our ...

He also was not involved with the study. “Long period comets enter the inner solar system at a range of angles, which the authors try to model using their spiral arm idea,” Gomez said in an email.

The solar panel frames and mounting rails need to be bonded (connected so that they maintain electrical continuity), and the whole mounting system then needs to be grounded to earth—i.e., with ...