In search of Vulcan (and Vulcanoids) to Explain Mercury’s Odd Orbit

While the planet Vulcan does not orbit between Mercury and the Sun, it is believed a family of asteroids called the Vulcanoids may exist. Pictured: the asteroid Ida. (NASA image)

Early astronomer Urbain Jean Joseph Le Verrier attempted to explain Mercury’s odd orbit by suggesting the presence of Vulcan: Another planet nearer the sun.

NASA Returns to the Moon With LADEE

An artist's concept showing the Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft orbiting the Moon while firing its maneuvering thrusters.

Credit: NASA Ames / Dana Berry

LADEE, NASA’s Lunar Atmosphere and Dust Environment Explorer, is an unmanned spacecraft that is bringing us back to the moon, by proxy.

Comet ISON: A Legend in the Making?

Hubble Space Telescope image of Comet ISON on April 10, 2013. Image Credit: NASA, ESA, J.-Y. Li (Planetary Science Institute), and the Hubble Comet ISON Imaging Science Team

Comet ISON is hot news among amateur astronomers, with thousands of people tuning in with their telescopes world-wide to capture the ‘Comet of the Century.’ Is ISON really so impressive?

What’s Around the Sun? Is Our Sun in a Vacuum?

Solar Dynamics Observatory image of an X class solar flare in July, 2012. Image Credit: NASA/SDO

Astronomy questions and answers: Although space is not a perfect vacuum, it surrounds the sun and other stars, unaffected by heat or other factors.

Astronomers Discover Rare Triple Quasar System

Telescopes at European Southern Observatory's La Silla site, which includes the New Technology Telescope Image Credit: Iztok Boncina/ESO Creative Commons License.

Astronomers measured red shift to determine the distances between the stars of the triple quasar, and believe that the group may be the beginnings of a galaxy merger.

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