This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between ...

The universe is a complete unknown to humans. We are not yet able to control and understand the system in which Earth is located, as evidenced by the possible discovery made by a g ...

The following evenings will see fleet-footed Mercury draw level with Jupiter, before rising above and away from the gas giant ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

From Mercury to Neptune ... structured in a roughly flat plane called the ecliptic, with most planets orbiting the sun in the same direction (counterclockwise, as viewed from above the sun's ...

Those orbiting Barnard’s star are among the ... Barnard’s star – all at less than the distance of Mercury’s orbit to the sun. Astronomers refer to a “habitable zone” that exists ...