Basic astronomy and night sky information
Articles about how to understand, find and see solar system objects including planets, the Moon, the Sun, asteroids, meteors, and comets with binoculars, telescopes, and the naked eye.
The planet Mercury will appear to pass across the face of the Sun on Monday, May 9, 2016. This event, known as a transit, will be visible in a small telescope with a proper solar filter from much of North and South America, Africa, and western Europe. It’s a great opportunity to see the mechanics of the solar system in action and to spot the elusive inner planet as it passes across the blazing solar disk [Read more…] about A Guide to the Transit of Mercury on May 9, 2016
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The year’s only total solar eclipse occurs next week on March 8-9, 2016. The narrow path of totality runs from the eastern Indian Ocean, across the islands of Sumatra, Borneo, Sulawesi, and on into the Pacific Ocean north of Hawaii. Armadas of ships carrying astronomical tourists are on the way to the area, especially to the region of maximum totality well north of Papua New Guinea where the eclipse will last an impressive 4 minutes. For readers of this site on the way to see this magnificent event, I wish you clear skies and calm seas [Read more…] about Total Solar Eclipse on March 9, 2016
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The planet Jupiter is always one of the brightest objects in the night sky. It’s brighter than any star, and is only outshone by the planet Venus and the Moon, and, very rarely, by Mars and Mercury. Jupiter reaches a position for optimum viewing in a telescope once every 13 months, roughly, and as you are about to discover, the visible face of Jupiter reveals so many interesting features in a small telescope that the planet is a favorite target for new and experienced stargazers [Read more…] about An Observer’s Guide to the Planet Jupiter
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NASA’s Jet Propulsion Lab has released this simulated but rather stirring flyover of the dwarf planet Ceres, the largest denizen of the asteroid belt between Mars and Jupiter. Using hundreds of images from NASA’s Dawn spacecraft, a team at Germany’s national space center (DLR) created a video that gives you a close-up of the most striking features of this little world.
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It’s been 170 years since the eighth (and so far last) major planet, Neptune, was discovered in our solar system. Pluto, of course, was discovered in 1930, heralded as the ninth planet, but then demoted by consensus of the astronomical community, largely at the behest of the Caltech astronomer Mike Brown who reasoned that Pluto was not large enough to gravitationally clear its path of other bodies, one of the three criteria for a major planet. In the ten years since Pluto’s demotion, Brown has been asked if there are any other planets in our solar system. His answer: “Nope, that’s it.” [Read more…] about A Ninth Planet Discovered?
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