NASA and Orbital Sciences have rescheduled the Cygnus freighter launch to ISS until January 8 because of cold weather.
NASA and Orbital Sciences have rescheduled the Cygnus freighter launch to ISS until January 8 because of cold weather.
Tag: engineering
The second commercial launch on SpaceX’s Falcon 9 rocket has been delayed three days until January 6 because an unspecified issue with the rocket’s fairing.
The second commercial launch on SpaceX’s Falcon 9 rocket has been delayed three days until January 6 because an unspecified issue with the rocket’s fairing.
It appears the company wants to do some additional inspections of the rocket, just to be sure all is well. They haven’t been more specific then this,
A box of 100-year-old negatives from the Antarctica Shackleton expedition have been discovered, processed, and printed.
A box of 100-year-old negatives from the Shackleton expedition, discovered in an abandoned supply hut in Antarctica, have been processed and printed.
NASA’s Lunar Reconnaissance Orbiter has spotted China’s Yutu rover on the Moon’s surface.
NASA’s Lunar Reconnaissance Orbiter has spotted China’s Yutu rover on the Moon’s surface.
These images confirm that the rover landed in Mare Imbrium, not Sinus Iridum, the originally announced landing site and the site that many Chinese news sources continue to report as the landing site.
The geological history of Venus: What’s known, not known, and unknown.
The geological history of Venus: What’s known, not known, and unknown.
This is a very clearly written overview by James Head, one of the world’s preeminent planetary geologists, of what has been learned about the geology of Earth’s sister planet, the planet of a million volcanoes. Key quote:
Many features on Venus (folded mountain belts, rift zones, tesserae) were like Earth, but there were few signs of Earth-like plate tectonics, so that Venus seemed to have a single lithospheric plate that was losing heat conductively and advectively. But the cratering record presented a conundrum. First, the average age of the surface was <20% of the total age of the planet, and second, the average was not a combination of very old and very young surfaces, such as Earth’s continents and ocean basins. Third, the lack of variability in crater density, and of a spectrum of crater degradation, meant that all geological units might be about the same age. This implied that the observed surface of Venus must have been produced in the past hundreds of millions of years, possibly catastrophically, with very little volcanic or tectonic resurfacing since then! Suddenly, Venus was not like Earth, nor like the Moon, Mars, or Mercury.
Some scientists even believe that Venus was essentially resurfaced in a massive volcanic event about a half billion years ago. Others disagree. Meanwhile, the European probe Venus Express has gotten hints that volcanic activity is still going on.
As Head concludes, it has been 20 years since the last spacecraft arrived at Venus to do geological research. It is time to return.
The Chinese rover Yutu, before going into hibernation for the long lunar night, successfully took its first spectrum of the Moon’s surface.
The Chinese rover Yutu, before going into hibernation for the long lunar night, successfully took its first spectrum of the Moon’s surface.
Virgin Galactic has released video of SpaceShipTwo’s second powered flight.
Virgin Galactic has released video of SpaceShipTwo’s second powered flight.
Messier notes how strained the pilot’s voices are, indicating that this test flight was “one wild ride.” I have put the video below the fold.
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Elon Musk outlines the upcoming test program for the development of the man-rated Dragon capsule.
Elon Musk outlines the upcoming test program for the development of the man-rated Dragon capsule.
The bottom line is that they are planning two major unmanned flight tests in 2014, followed by a manned flight test in 2015. The manned flight would use their employees, not NASA astronauts.
Mars One narrows its applicant pool of would-be Martian colonists from 200,000 to just over a 1000.
Mars One narrows its applicant pool of would-be Martian colonists from 200,000 to just over a 1000.
People started applying for a voyage to the red planet in April 2013 through Mars One, a Netherlands-based private venture that wants to land humans there by 2025. By the time the company stopped taking applications, more than 200,000 people had submitted one. Today, Mars One announced that it’s made a short(er) list of 1,058 applicants.
These are individuals willing to make a one way trip.
Mars Express buzzes Phobos.
Mars Express buzzes Phobos.
Analysis of the data will allow scientists to better estimate the mass of the Martian moon, which in turn will tell us a great deal about its make-up.
And no, there is no evidence the spacecraft was attacked by the Phobosians. But then, this is not a Russian spacecraft.
The company for the high resolution cameras that the Russian astronauts were unable to install on ISS during their spacewalk last week has issued an update.
The company for the high resolution cameras that the Russian astronauts were unable to install on ISS during their spacewalk last week has issued an update.
The installation of the cameras proceeded according to plan and without incident. During a spacewalk, Russian cosmonauts were able to transport the cameras to their mounting position and install them quickly and efficiently. However, soon after installation, the Mission Control Centre (MCC) outside of Moscow was unable to receive any data from either camera (contrary to what was reported during the live transmission of the spacewalk). Without this data, engineers in the MCC were not able to confirm that the cameras were receiving the power necessary to allow them to survive the temperature fluctuations of the space environment. As a consequence, senior technical personnel from UrtheCast and RSC Energia (UrtheCast’s Russian partner) jointly decided that the safest and most prudent course of action was to uninstall the cameras and bring them back inside the ISS to be reinstalled at a later date, once the data transmission problem has been solved.
UrtheCast’s Chief Technology Officer, Dr. George Tyc, was present at the MCC throughout the operation, along with the Company’s Chief Engineer for Space Systems, Mr. Greg Giffin. Said Dr. Tyc, “The fact the neither camera could communicate with the MCC strongly suggests that the problem lies inside the ISS and it is not a problem with the cameras or external cables. This kind of issue has been encountered before on the ISS and can be fixed in the near-term. Bringing the cameras back inside to be installed another day was simply the right engineering decision.”
No word on what caused the problem, but as this commercial project is being done in partnership with the Russians and the Russians are whom the company is working to solve the technical problem it was almost certainly on the Russian portion of ISS.
The first person to cycle to the South Pole.
The first person to cycle to the South Pole.
Leijerstam used a modified version of the commercially-available Sprint trike, made by recumbent tricycle manufacturer Inspired Cycle Engineering (ICE). She chose to go with a recumbent trike because it would allow her to maintain stability in the often very-high winds. This allowed her to concentrate simply on moving forward, instead of having to waste time and effort keeping her balance. The strategy paid off, as she not only made it, but also beat two other cyclists who had set out for the Pole on two-wheelers, days before her Dec. 17th start date.