Tag Archives: Mercury

Free Astronomy Magazine – September-October 2017 Issue Available For Reading And Download

Greetings, fellow astrophiles!

The most recent issue of Free Astronomy Magazine (September-October, 2017) is available for your reading and downloading pleasure at www.astropublishing.com (click the link to go directly to the issue).

Free Astronomy Magazine was featured as the first of a series of articles on great free online content for amateur astronomers (see A Universe Of Free Resources Part 1) and we’ll be keeping track of future publications under the Online Resources category on the CNYO website.

You can find previous Free Astronomy Magazine issues by checking out our Free Astronomy Magazine Category (or look under the Education link in our menu).

For those wanting a quick look at what the issue has to offer, the Table of Contents is reproduced below.

September-October 2017

The web browser-readable version of the issue can be found here:

September-October 2017 – www.astropublishing.com/5FAM2017/

For those who want to jump right to the PDF download (27 MB), Click here: September-October 2017

“Upstate NY Stargazing In September” Article Posted To newyorkupstate.com And syracuse.com

Greetings, fellow astrophiles!

With the summer nearly over and long nights replaced by early school bus mornings, the UNY Stargazing series has returned to its regularly-scheduled monthly publishing.

The latest article in the Upstate NY Stargazing series, “Upstate NY stargazing in September: Cassini’s end and morning planet delights,” has just been posted to newyorkupstate.com and syracuse.com.

Direct Links: newyorkupstate.com and syracuse.com

The Great American Eclipse for 2017 has come and gone without major reported inconvenience to the cities that ended up hosting large groups. This is good news for Western and Upstate New York, as we will be participants in the observation of totality on April 8, 2024 and have to contend with potential crowds on top of whatever weather early April brings that year. In the meantime, if you still have your eclipse glasses, you can give others an opportunity to enjoy upcoming total eclipses in South America and Asia in 2019. Consider donating your glasses to the great outreach organization Astronomers Without Borders – see the link for all the details.

Caption:The tail end of the August 21st eclipse from Nashville, including sunspot group 2671 at center and sunspot 2672, just clipped by the moon. (Photo by John Giroux)

* It is a busy month for amateur astronomy, with Jupiter getting very close to being un-observable until December (so catch those photons now), Cassini about to take a serious plunge into Saturn, and Mercury, Venus, and Mars doing a wonderful dance in the pre-sunrise skies all month. Try to catch the days shown below (and see the article for more details)!

Caption: The prominent planetary groupings in the morning sky this month. (Image made with Stellarium)

* The constellation of the month is Draco – and with just one more circumpolar constellation to go, we’re two months away from explaining just what that means!

NASA Space Place – What It’s Like On A TRAPPIST-1 Planet

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. NASA Space Place has been providing general audience articles for quite some time that are freely available for download and republishing. Your tax dollars help promote science! The following article was provided for reprinting in March, 2017.

By Marcus Woo

2013february2_spaceplaceWith seven Earth-sized planets that could harbor liquid water on their rocky, solid surfaces, the TRAPPIST-1 planetary system might feel familiar. Yet the system, recently studied by NASA’s Spitzer Space Telescope, is unmistakably alien: compact enough to fit inside Mercury’s orbit, and surrounds an ultra-cool dwarf star—not much bigger than Jupiter and much cooler than the sun.

If you stood on one of these worlds, the sky overhead would look quite different from our own. Depending on which planet you’re on, the star would appear several times bigger than the sun. You would feel its warmth, but because it shines stronger in the infrared, it would appear disproportionately dim.

“It would be a sort of an orangish-salmon color—basically close to the color of a low-wattage light bulb,” says Robert Hurt, a visualization scientist for Caltech/IPAC, a NASA partner. Due to the lack of blue light from the star, the sky would be bathed in a pastel, orange hue.

But that’s only if you’re on the light side of the planet. Because the worlds are so close to their star, they’re tidally locked so that the same side faces the star at all times, like how the Man on the Moon always watches Earth. If you’re on the planet’s dark side, you’d be enveloped in perpetual darkness—maybe a good thing if you’re an avid stargazer.

If you’re on some of the farther planets, though, the dark side might be too cold to survive. But on some of the inner planets, the dark side may be the only comfortable place, as the light side might be inhospitably hot.

On any of the middle planets, the light side would offer a dramatic view of the inner planets as crescents, appearing even bigger than the moon on closest approach. The planets only take a few days to orbit TRAPPIST-1, so from most planets, you can enjoy eclipses multiple times a week (they’d be more like transits, though, since they wouldn’t cover the whole star).

Looking away from the star on the dark side, you would see the outer-most planets in their full illuminated glory. They would be so close—only a few times the Earth-moon distance—that you could see continents, clouds, and other surface features.

The constellations in the background would appear as if someone had bumped into them, jostling the stars—a perspective skewed by the 40-light-years between TRAPPIST-1 and Earth. Orion’s belt is no longer aligned. One of his shoulders is lowered.

And, with the help of binoculars, you might even spot the sun as an inconspicuous yellow star: far, faint, but familiar.

Want to teach kids about exoplanets? Go to the NASA Space Place and see our video called, “Searching for other planets like ours”: spaceplace.nasa.gov/exoplanet-snap/

This article was provided by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

Caption: This artist’s concept allows us to imagine what it would be like to stand on the surface of the exoplanet TRAPPIST-1f, located in the TRAPPIST-1 system in the constellation Aquarius. Credit: NASA/JPL-Caltech/T. Pyle (IPAC)

About NASA Space Place

With articles, activities, crafts, games, and lesson plans, NASA Space Place encourages everyone to get excited about science and technology. Visit spaceplace.nasa.gov (facebook|twitter) to explore space and Earth science!