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Brian Ventrudo

A Guide to Observing Comet 45/P Honda–Mrkos–Pajdušáková

January 5, 2017 by Brian Ventrudo Filed Under: Solar System

Comet 45P/Honda-Mrkos-Pajdusakova imaged by amateur astronomer Tim Puckett in 2011.
Comet 45P/Honda-Mrkos-Pajdusakova imaged by amateur astronomer Tim Puckett in 2011.

A little periodic comet is visiting the inner solar system over the next few months. Comet 45/P Honda–Mrkos–Pajdušáková, a tiny piece of ice and dust left over from the earliest days of the solar system, moves periodically around the Sun every 5.25 years. It made its closest approach to the Sun on December 31, 2016 and it’s visible now. As it passes close to Earth in February, it will brighten and appear to move quickly across the sky from day to day. You’ll need binoculars to see it, but it’s worth following this little leftover hunk of the early solar system [Read more…] about A Guide to Observing Comet 45/P Honda–Mrkos–Pajdušáková

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Filed Under: Solar System comet, solar system

Venus and the “New Year” Crescent Moon

January 2, 2017 by Brian Ventrudo Filed Under: Solar System

venus-moon-new-year-2017
Venus and the crescent Moon on the evening of January 1, 2017, imaged from Bethesda, MD.

The waning of the first day of 2017 sees the slender crescent Moon, rounded out by Earthshine, and the brilliant planet Venus in the western sky after sunset. Venus puts on quite a show this month as it reaches greatest eastern elongation on January 12 and lies some 47° east of the Sun. The planet then grows in brightness to magnitude -4.7 by month’s end. That’s as bright as the planet ever gets, bright enough to cast shadows on a dark night.

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Filed Under: Solar System moon, venus

The Sky This Month – January 2017

January 1, 2017 by Brian Ventrudo Filed Under: Celestial Events

Comet 45P/Honda-Mrkos-Pajdusakova on Dec. 23, 2016. A skinny gas or ion tail extends to the east of the blue-green coma. The comet is currently visible near the end of evening twilight. Credit: Jose Chambo
Comet 45P/Honda-Mrkos-Pajdusakova on Dec. 23, 2016. A thin ion tail extends to the east of the coma. The comet is visible in evening twilight through mid-January, then reappears after it swings around the Sun in late January and into February and March 2017. Credit: Jose Chambo at cometografia.es

“And now we welcome the New Year, full of things that have never been.”
– Rainer Maria Rilke

1 January 2017. Begin the new year by counting your blessings, then strolling out after sunset to examine the dazzling sight of a slender crescent Moon within 5° of Venus in the southwestern sky [Read more…] about The Sky This Month – January 2017

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Filed Under: Celestial Events

The Sky This Month – December 2016

December 1, 2016 by Brian Ventrudo Filed Under: Celestial Events

Meteors from the Geminid meteor shower (credit: Asim Patel)
Meteors from the Geminid meteor shower (credit: Asim Patel)

It’s an excellent month for stargazers, so I encourage you to take some time out of your busy holiday preparations to enjoy the night sky. There are two respectable meteor showers, and the Moon passes close to five major planets during the month. Brilliant Venus dominates the western sky after sunset, while Jupiter outshines every star as it continues to brighten in the eastern sky before sunrise. And on the last day of 2016, Neptune comes within 0.1º of the planet Mars, the closest approach of these two planets in more than 700 years! Here’s what to see in the night sky this month… [Read more…] about The Sky This Month – December 2016

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Filed Under: Celestial Events

A Brief Guide to Observing the Planet Venus

November 24, 2016 by Brian Ventrudo Filed Under: Solar System

venusThe planet Venus is the third brightest object in our skies after the Sun and the Moon. Known since the first humans turned their gaze to the sky, the striking appearance of Venus compelled the ancient Greeks and Romans to name the planet after the goddess of love and beauty. Other cultures, including the Sumerians and the Pawnee in North America also linked this brilliant planet to objects of feminine beauty.  The ancient Mayans had a particular interest in Venus and built an observatory at Chichen Itza to, among other things, precisely measure the position of the planet, and some aspects of the Mayan calendar are based on the motions of Venus. While Venus reveals little detail in a telescope, it grows and shrinks and goes through a series of phases similar to the Moon, and comes closer to Earth than any other planet. Here’s a little background on the planet Venus and a few tips to help you see the planet for yourself and understand its apparitions and motion in our skies [Read more…] about A Brief Guide to Observing the Planet Venus

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Filed Under: Solar System observing guide, solar system, venus

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