The third closest star system to the sun, called WISE J104915.57-531906, is at the center of the larger image, which was taken by NASA’s Wide-field Infrared Survey Explorer (WISE). It appeared to be a single object, but a sharper image from Gemini Observatory in Chile (inset), revealed that it was binary star system, consisting of a pair of brown dwarfs. This is the closest star system to be discovered in nearly a century. The discovery was announced in March, 2013.
Caption and Image: NASA/JPL/Gemini Observatory/AURA/NSF/Berkeley.edu
There seems to be no Planet X. There has been an ongoing idea of a planet outside the orbit of Pluto. Surveys by the Wide-Field Infrared Survey Explorer (WISE) turned up thousands of “new to us” stars and brown dwarfs within 500 light-years, but no Planets.
The outer solar system probably does not contain a large gas giant planet, or a small, companion star
- Kevin Luhman of the Center for Exoplanets and Habitable Worlds at Penn State University, University Park, Pa., author of a paper in the Astrophysical Journal describing the results.
The recent study, looking at WISE data found no objects Saturn sized or larger to a distance of 10,000 A.U. and no Jupiter sized or larger out to 26,000 A.U. In rough terms 1 A.U. is about 150 million km / 93 million miles.
Read more about this at The WISE page at Berkeley, it is worth the visit I promise!.
Yuri Gagarin and news of the first human in space. Credit: NASA (linked below)
Today Yuri Gagarin would have been 90 years old. “Yuri” was a Soviet cosmonaut and pilot and became the first human in space, completing an orbit in his Vostok spacecraft on 12 April 1961.
Gagarin was killed in a training accident (March 1968) when the jet he was piloting crashed. Gagarin’s death was (and still is) was fodder for conspiracy theorists as it apparently completely isn’t certain. Official reports indicate weather was a factor.
Today the anniversary of significant space exploration milestones is marked by a worldwide celebration named for Gagarin – Yuri’s Night.
Yuri’s Night began on 12 April 2001, 40 years after the historic and world-changing flight. One of the main goals is to increase public interest in space exploration. It also happens that the flight of STS-1, the very first Space Shuttle mission was launched on 12 April 1981.
I always have fun on Yuri’s Night, after a long, cold winter it will feel good to get out.
Yuri’s night isn’t just big, it’s HUGE! Last year something like 350 star parties were held in almost 60 countries and many-many more on-line celebrations.
Look for a celebration near you:
Yuri’s Night – The World’s Space Party
The image above comes from NASA, see the caption and a link to archival Gagarin video here.
Cosmos: A Spacetime Odyssey
Tomorrow is the premier of the updated version of the iconic television series, Cosmos. The original version is of course was hosted by Carl Sagan and aired in 1980, Cosmos: A personal journey.
The new version is hosed by Neil deGrasse Tyson. I was lucky enough to have seen the first episode and Tyson seems perfect for the role.
The 13-episode series is billed as “An epic Adventure in time, space and life”. Tyson has a line in the first episode that sums things up nicely: “It’s time to get going again”.
One of the show’s producers is Ann Druyan, a producer known for Contact (1997) and was married to Carl Sagan from 1981 until his death in 1996.
I could not believe my eyes when I read another of the group of producers was Seth MacFarlane – yes THAT Seth MacFarlane. I’m not sure why this surprises me, although I am very pleased so see him on the team.
You can see this in FOX starting on 9 March 2014 and NatGeo on 10 March 2014. Check your local listings for times. The series premier is scheduled for 9pm Eastern 8pm Central on FOX (01:00 UTC if I did the math correctly).
Visit the official site: Cosmos: A Spacetime Odyssey.
There is another show coming at weeks end “Live from the Space”, more on that about mid-week.
An image of the flash resulting from the impact of a large meteorite on the lunar surface on 11 September 2013, obtained with the MIDAS observatory. Credit: J. Madiedo / MIDAS
A meteorite with about the mass of a small car impacted the moon last September and it was seen by Spanish astronomers. I don’t often mention Spanish astronomers, more the pity and bad on me. Spain has some of the best observers and astronomers as there are anywhere.
In this case on 11 September 2013, Prof. Jose M. Madiedo was operating two telescopes in the south of Spain that were searching for these impact events. At 2007 UTC he witnessed an unusually long and bright flash in Mare Nubium, an ancient lava-filled basin with a darker appearance than its surroundings.
We are hearing about this now because the scientists involved published their description of the event in the journal Monthly Notices of the Royal Astronomical Society. By the way, video links are included below the fold.
The Spanish telescopes are part of the Moon Impacts Detection and Analysis System (MIDAS) system that monitors the lunar surface. This project is being undertaken by Prof. Jose Maria Madiedo, from the University of Huelva (UHU), and by Dr. Jose L. Ortiz, from the Institute of Astrophysics of Andalusia (IAA-CSIC) and continues a pioneering program that detected sporadic lunar impact flashes for the first time.
Static image from OVATION. Click to go to the OVATION page with live images. Credit NOAA
The US Space Weather Prediction Center and the Space Weather Prediction Testbed recently introduced a new Auroral Foercast (test) product.
The Auroral Forecast product is based ont eh OVATION Prime model providing a 30 to 40 minute forecast on auroral displays and probabilities for both polar regions. The model itself was developed by P. Newell at the Johns Hopkins, Applied Physics Lab. Scientists at the NESDIS National Geophysical Data Center (NGDC) added further refinements to make the model run in real time.
The model uses data from the Advanced Composition Explorer (ACE) satelite. For the displays, the model takes the ACE data and provides output in terms of energy per unit area and converts that into a relative intesity map and that is further translated into a probability of observation. The resulting images show where the aurora most likely will be seen and how intense it is likely to be.
The release of the OVATION product is timely as we should be seeing an increase in auroral activity.
What is the solar cycle progression shaping up? Quite close to predictions.
The image is a static image of the northern hemisphere, click it to go to the OVATION page and get a live look at both poles or you can click here.
The same Solar Radiation Storm that delayed the Cygnus launch on Thursday should provide some of us with an aurora. Note the Cygnus cargo ship HAS launched!!
I’m not sure this will be a huge display, it will however be one of the better displays in a long while.
Right now, not much is happening, but things should be getting going in a few hours, I for one am planning on being outside a few hours before daylight here and that would be about 08:00 or 09:00 UTC.
A visual from the SWPC page (it should be current)
The latest WWV Geophysical Alert Message:
Solar-terrestrial indices for 09 January follow.
Solar flux 184 and estimated planetary A-index 10.
The estimated planetary K-index at 2100 UTC on 09 January was 3.
Space weather for the past 24 hours has been strong.
Solar radiation storms reaching the S3 level occurred.
Space weather for the next 24 hours is predicted to be strong.
Geomagnetic storms reaching the G3 level are likely.
Solar radiation storms reaching the S2 level are expected.
Radio blackouts reaching the R1 level are expected.
A very nice concise page of data including all updates to the above message can be found at the SWPC and by clicking here.
Yesterday was a look back at highlights from ESA, today we have the same for NASA.
Although I only mention two agencies, there were more including Japan, India and especially China making their mark.
The same can easily be said for the new commercial space companies such as Space X and Orbital,
HAPPY NEW YEAR!
At 17:11 UTC, the very time of this posting, the December solstice occurred.
The word solstice comes from mid-13c., from Old French solstice (13c.), from Latin solstitium “point at which the sun seems to stand still,” especially the summer solstice, from sol “sun” (see sol) + past participle stem of sistere “to come to a stop, make stand still” (see assist (v.)).
One mis-conception about the December solstice (same for the June Solstice) is it occurs on the same day. While most of the time the winter solstice does fall on 21 December, depending on the moon the date can change a little.
The moon? Yep, the moon.
Watch the ISS spacewalks at the NASA TV link just below the banner at the top of the page.
GOCE comes home. Credit: Bill Chater via ESA.
Now that MAVEN has launched, it might be a good time to sort of catch up a little on the newer unmanned missions.
The image above shows the GOCE spacecraft re-entering the atmosphere. It was taken by Bill Chater in the Falklands at 21:20 local time on 11 November. Nice image, made the page this week too.
NASA’s LADEE mission is around halfway though the lunar commissioning phase, the orbit is about 250 km (155 mi) above the lunar surface. Instrument testing and calibration is continuing. Contact passes via a European ground station in Tenerife Spain have begun. NASA’s Update
The Indian Space Research Organisation’s Mars Orbiter Mission continues to go well. On an earlier update (11 Nov) the spacecraft’s apogee was increased to 78276 km (48,638 miles), apogee being the part of the orbit where it is farthest from Earth. Another maneuver to increase Apogee has been completed and the current distance has increased to 118,642 km (73,720 miles). ISRO Mars Mission Page.
Plenty of activity to come too. Something like 60 (?) small cubesats are to be sent up in two separate launches on the 20 and 21 November and the SWARM launch on 22 November.
I am hoping the Gaia launch comes off in December too – that’s going to be a fantastic mission.
Among other things on This Week @ NASA, an update and a brief overview of the MAVEN mission to Mars scheduled for liftoff Monday.
Source: This Week @ NASA