Archive for the ‘Citizen Science’ Category

Another one bites the (star)dust

Thursday, October 21st, 2010

SOHO has captured another Kreutz Sungrazer comet plunging towards the Sun this week.  Kreutz Sungrazers, named for astronomer Heinrich Kreutz and the comets’ “sun-grazing” orbits, are believed to be the fragments of a super-comet that broke apart some 2,000 years ago.

While most of these fragments can be measured in meters, there are the rare “Great Comets”  that are visible even in the daytime sky.  This particular comet was not one of those larger fragments, nor did it actually dive “into” the Sun as it appears to in the movie; rather, it is passing within such close proximity as to be completely disintegrated.

Many of the Kreutz Sungrazers are discovered by amateur astronomers.  This particular fragment was discovered by Chinese comet-hunter Bo Zhou.  Click here to learn how you can use SOHO images to discover your own sungrazing comets!

(*Credit Note: Fragmentation hierarchy of bright sungrazing comets and the birth and orbital evolution of the Kreutz system. I. Two-superfragment model: http://hdl.handle.net/2014/39288)

Near-Earth-Object 2010 RF12 in Aquarius

Wednesday, September 8th, 2010

Two small space rocks, discovered just three days ago, are passing between our planet and the Moon today. Last night, I managed to grab a picture of the closer one, 2010 RF12, as it passed through the constellation Aquarius.

In this image (click for larger version,) the NEO appears as a faint segmented line. That’s because it is a small object moving quickly through multiple exposures of a fixed field of view.  Several galaxies are also apparent, including NGC 7364 which hosted a supernova in 2006.

Location: Slooh Remote Observatory, 954, Mt. Teide, Tenerife, Canary Islands
Scope: 0.5 meter f6.8 Corrected Dall Kirkham
Coordinates: RA 22 44 48 DEC -00 06 06 (Aquarius)
Time: 2010 Sept 08, 0440 UTC
Magnitude: 15.58
NEO: 2010 RF12 / 5.8m – 13m Aten object
Close Approach: 0.2 LD (48,000 miles) 2010 Sept 08 at 21:12 UTC
Discovery: 2010 Sept 05, Andrea Boattini, Mt. Lemmon, Arizona, Catalina Sky Survey

Observing the Moon Together!

Friday, September 3rd, 2010

We all do it, all year long.  In fact, it’s the one thing we can do no matter how light-polluted our skies.  We can even do it in sunlit skies!  This year, NASA EPO teams and their partners encourage us all to look at the moon together on Saturday, September 18, as they inaugurate the first-ever International Observe the Moon Night!

This international event includes local Moon observing parties, various NASA webcasts and online chats, a Moon photo contest (get your images submitted now!) and even International Observe the Moon Night gear, like t-shirts and canvas bags!

The local events range from formal planetarium presentations to individuals sharing their telescopes on the sidewalk.  I encouraged my local planetarium to host an informal observing event in their parking lot.  We’ll set-up several telescopes, hand out Moon Maps and Fun Facts sheets, give away NASA prints and posters and a few astronomy books, and share some real-time imaging.  I’ve even enlisted my children’s participation in posting event flyers around town!

The webcasts and online chats are equally wide-ranging, from NASA and MyMoon videocasts leading up to the main event, to individual online viewing opportunities on September 18.  Mike White practiced his setup from New Zealand last week, and Kate Kay ran a couple of preliminary sessions from the U.K., this past weekend.

There’s also a Moon photo contest, running from August 24 to September 23.  Categories include Landscape, Wide-Angle, and Narrow-Angle, and the judging process includes online voting!  I’ve submitted two entries, “Smallest” Moon and Palm Moon, to get involved and encourage others to participate.

*FUN FACTThe oldest surviving  Moon photo is Samuel D. Humphrey’s daguerreotype, taken from Canandaigua, NY, on September 1, 1849.

Not least of all, there is the InOMN gear, because we all love sharing our passion for the night sky.  The InOMN folks have set-up a Cafe Press shop for t-shirts, mugs, totes, and even something special for “man’s best friend.”  Watch for InOMN stickers on the main site – perfect for your own InOMN10 event or encouraging friends and community to get involved.

Twitter-users can follow InOMN and MyMoonLPI to receive their latest announcements.  You can also follow the #InOMN conversation to connect with participants from around the world and to share your own experiences.

So, go on – explore the InOMN website and make some plans for your own participation on September 18!  You can also check-out the Astronomers Without Borders website for more fun InOMN activities, including a lunar poetry contest and their new Moon and Culture project.

Visualizing Our Busy Neighborhood

Sunday, August 29th, 2010

It’s one thing to read about the discovery history of asteroids; it is another to visualize it.  Astronomer Scott Manley has created a fantastic animation illustrating the known positions of all asteroids discovered in the past three decades.  Each new discovery appears as a white object and then evolves to either yellow or red for near-Earth-asteroids, or green for all others.

While the animation is not to scale – Space is not so crowded as it appears in the video – it does offer a great comprehension of how frequently we are discovering new objects, especially in the last decade, and of just how busy our inner solar system really is.  Hundreds of thousands of asteroids have already been discovered, more than seven-thousand of which pass near or across our own planet’s orbit.  Scientists estimate that there are probably millions of undiscovered asteroids residing in the Main Belt, with about 750,000 measuring greater than one kilometer, and hundreds of thousands of which are likely near-Earth asteroids.

The most interesting thing about Manley’s animation is the discovery pattern.  As noted in Manley’s You Tube description, most discoveries are made in the region directly opposite the Sun and many are obviously related to specific missions and surveys, such as the automated sky surveys, the more recent WISE mission, and even past searches for Jovian satellites.

Kudos to Scott Manley for this creative way of bringing the more intricate details of solar system discovery down to Earth!

*Click the full-screen option and turn up your sound.

Now Available On-Demand

Thursday, August 12th, 2010

Our special Perseids #Meteorwatch presentation, When Planets and Particles Collide – Part II, is now available for on-demand play.  Click here to watch and listen.  NOTE: The slides may take a moment to load.

Planets, Particles, and the Perseids!

Wednesday, August 11th, 2010

WHAT: When Planets and Particles Collide – Part II

WHEN: Thursday, August 12, 9:00 pm EDT

WHERE: AFM*Radio

Join us Thursday night on AFM*Radio for a fun slideshow presentation featuring the Perseid Meteor Shower!  Adapting last year’s When Planets and Particles Collide, we’ll  focus on the Perseids as we talk about the differences between meteoroids, meteors, and meteorites; the mechanisms of meteor showers; and the night sky surrounding constellation Perseus.  Science and Fun, all rolled into one!

NOTE: This special feature will be presented in Adobe Connect.  Log-in here as a “guest”. You can then listen to the audio through the Adobe room, or mute the Adobe sound and listen via AFM*Radio.