Want to know what’s been happening in the Universe this week? Get over to Carolyn Collins Petersen’s space and astronomy blog (a.k.a. “The Spacewriter”) for a SUPERB Carnival of Space. I’m not entirely sure where to start for week 88, there’s so much to choose from! In fact, looking at the number of entries, I’d say this is one of the largest turnouts so far. Wow, there’s a lot of science writing going on!
From Carolyn’s well-crafted peek into the space blogosphere, here’s a tiny fraction of articles that caused a derailment to my plans for getting any work done this afternoon (plus my first reaction, in a word):
21st Century Waves (Bruce Cordell): Long Waves and the Future of Human Spaceflight – Wow
Centauri Dreams (Paul Gilster): A Workable Fusion Starship? – Whoosh!
Space Video of the Day: Announcement by Pres. Regan after the Challenger disaster – Moving
Mang’s Bat Page (David Gamey): How You Could Pilot a Space Telescope (Upside Down) – Shiny!
Simostronomy (Mike Simonsen): Aperture Fever – Obsessed!
The Martian Chronicles (Ryan Anderson): The MOC “Book”: Introduction – Insightful
Starts With A Bang! (Ethan Siegel): Supernovae and Dark Energy: Part II – Aha!
There are loads more where that came from, so get your bums down to The Spacewriter and enjoy!
From Astroengine.com, I submitted my musings about the secret payload on that Delta IV Heavy… just why are clandestine launches so damned sexy?
Sirius Morse code, but what does it say? (©Jimmy Westlake)
It’s another one of those “I wish I’d thought of that” moments. Well, at least it would have been if I knew Morse code. And if I was an astrophotographer. I have a camera, and some patience, and have worked out how to capture the Moon with my ancient SLR, so perhaps there’s some hope yet? Nah, I’ll give up on this one.
Jimmy Westlake from Colorado took this shot of star trails, with the brightest star being Sirius. Usually, star trails are continuous arcs of light after keeping the shutter of the camera open for minutes-hours at a time. You’ll notice that this picture is different, the star trails are broken. It turns out that Westlake wanted to celebrate the International Year of Astronomy 2009 in his own way:
“This is actually a series of 28 separate exposures on one piece of film. The ‘dots’ are 30-second exposures; the ‘dashes’ are 3-minute exposures. The ‘shutter’ creating the gaps was my shivering, gloved hand held over the lens in the 0ºF Colorado air. The entire message required just under two hours to record. Every few minutes, I had to turn on a blow dryer to keep the frost from forming on the lens–and me!“
I’ll let you try to decipher the code if you can read Morse code, otherwise read on for the answer…
The day has come. Finally, I get to promote my excitement for the importance of Space Beer. Ohhh yes! Incidentally, Space Beer has been the theme of the last few days of the AAS conference (free beer, special free Galileo limited edition Sierra Nevada beer. Did I mention it was free?), so it seems fitting to have my 365 Days of Astronomy podcast broadcast the day after returning from the conference fuelled by (free) space-themed booze.
So, today (January 9th), over at the 365 Days of Astronomy, celebrating the International Year of Astronomy 2009, you can tune into my contribution to the IYA2009: The Link Between Beer and Space Settlement.
Go to the 365 Days of Astronomy blog post for the transcript and podcast options »
Play the podcast mp3 NOW!
To top the whole experience off, I had the superb fortune to meet the musician behind the 365 Days of Astronomy theme tune, plus we were also treated to a mini-concert by him during the official USA opening of the International Year of Astronomy 2009 at the AAS conference on Tuesday. Written and performed by George Hrab, the entire audience at the IYA2009 grand opening ceremony had a great time singing along to the lyrics. I’m assuming the song is called “Far”, for obvious reasons. Funnily enough, in the audience participation parts of the tune, avatars participating in the Second Life virtual world were also singing along. George not only entertained the real world, he transcended this life to make the Second Life rock! Now that is inspirational!
Photos after the jump…
304A SOHO/EIT image of the solar disk (NASA/ESA)
Back in 2006, I was feeling a bit nostalgic about my four years of research at the University of Wales, Aberystwyth Solar Group, so I decided to try to find some high resolution prints of the Sun. After a lot of effort, I didn’t find any prints I could buy or download, but I did find some high resolution images from the Solar and Heliospheric Observatory (SOHO) image archive. Although some were a bit noisy, I was able to clean them up with Photoshop and did some layer tweaking/saturation/balance to draw out the fine detail of the chromospheric network–as seen above in the 304A Extreme ultraviolet Imaging Telescope filter–plus a distinct prominence (in the bottom left-hand of the image).
Not stopping there, I decided to give the same treatment to high resolution 171A and 195A images. They came out very well and I kept rotating them as my wallpaper for months. Having just read Phil’s post on today’s perihelion (the time of year when the Earth is at its closest to the Sun during its orbit), I came across a comment asking whether anyone had any wallpapers of the same 304A EIT image. Well, here it is! Plus two more!
If anyone wants to find out how the images were edited, feel free to ask and I’ll let you know. Truth be known, there’s thousands of space images held by NASA, ESA etc. open to the public domain that rarely get the “airtime” they deserve. So it’s about time I dust off these three-year old edits and share the magnetohydrodynamic love.
I miss active regions, I wish the Sun would amp it up a bit so we can see all those lovely flares, CMEs, filaments and coronal loops… ahhhh… coronal loops…
304A SOHO/EIT image of the solar disk (NASA/ESA)
171A SOHO/EIT image of the Sun (NASA/ESA)
195A SOHO/EIT image of the Sun (NASA/ESA)
Four centuries after Galileo Galilei first pointed his telescope at the night sky, the international community will not only be commemorate Galileo’s momentous discoveries, we will celebrate mankind’s continuing scientific endeavours in space. Back in 2007, the United Nations decided 2009 should be dedicated to astronomy and named it the “International Year of Astronomy”. It is going to be a huge year for all astronomical disciplines, intended to educate, celebrate and enjoy the wonders of the cosmos. Many events are planned throughout the coming twelve months, in the 135 nations participating. You won’t be far away from an IYA2009 participating group or organization, so be sure to embrace this landmark year, it could change the way you view the Universe forever…
The Universe, yours to discover.
A white dwarf called KPD 0005+5106 has been identified as the hottest star observed, ever. KPD 0005+5106 lives in the globular cluster M4, 7,200 light years away, and astronomers have always been intrigued by this stellar lightweight as its emissions have previously hinted it was quite toasty. Now, astronomers using data from the defunct NASA Far-Ultraviolet Spectroscopic Explorer (FUSE), have studied the white dwarf in more detail. KPD 0005+5106 emits radiation in the far-ultraviolet, indicating that its surface has a temperature of 200,000K. This is an unprecedented discovery, far-ultraviolet emissions are usually reserved for superheated stellar coronae. It may be small, but it’s a record-breaker…
Video of the fireball event over Colorado (Chris Peterson)
Early this morning, a huge explosion lit up the Colorado skies. According to one observatory that videoed the event with its ever-watching all-sky camera, the fireball (or bolide) peak brightness (magnitude -18) exceeded the brightness of a full Moon 100 times. An awesome event. The Cloudbait Observatory, near Denver, is calling on eye-witnesses to submit their reports so possible meteorite fragments can be found on the ground. Only last month, a similar effort resulted in Canadian meteorite hunters finding over two dozen fragments from the Saskatchewan fireball.
For all the information about the Colorado event, check out my Universe Today article Exploding Colorado Fireball, 100 Times Brighter than the Moon (Video).
I must admit though (as one of my readers pointed out), it is surprising to hear about this recent flurry of large fireball events. Some of these meteoroids are as big as 10 tonnes (in the case of the Saskatchewan fireball), and scattered meteorites are being found on the ground (fortunately over sparsely populated regions). Are these recent series of fireball spottings down to improved observation techniques and a bit of luck? After all, the October fireball was observed directly over several all-sky cameras dedicated to spotting meteors; the November fireball was seen by a huge number of people in cities across the Saskatchewan/Alberta border and last night’s fireball appeared above another dedicated meteor all-sky camera.
A few of these events are expected every year, so this is certainly nothing to be concerned about, we’re just getting better at observing these transient events…