Rosetta’s lander has completed its primary science mission after nearly 57 hours on Comet 67P/Churyumov–Gerasimenko.
After being out of communication visibility with the lander since 09:58 GMT / 10:58 CET on Friday, Rosetta regained contact with Philae at 22:19 GMT /23:19 CET last night. The signal was initially intermittent, but quickly stabilised and remained very good until 00:36 GMT / 01:36 CET this morning.
Against the odds – with no downwards thruster and with the automat [...]
Framing a bright emission region this telescopic view looks out along the plane of our Milky Way Galaxy toward the nebula rich constellation Cygnus the Swan. Popularly called the Tulip Nebula the glowing cloud of interstellar gas and dust is also found in the 1959 catalog by astronomer Stewart Sharpless as Sh2-101.
About 8,000 light-years distant and 70 light-years across the complex and beautiful nebula blossoms at the center of this composite image. Red, green, and blue hues map emission fr [...]
NASA's industry partners continue to complete development milestones under agreements with the agency’s Commercial Crew Program. The work performed by Blue Origin, Boeing, Sierra Nevada Corporation and SpaceX during partnership and contract initiatives are leading a new generation of safe, reliable and cost-effective crew space transportation systems to low-Earth orbit destinations.
Blue Origin conducted an interim design review of the subsystems in development for its Space Vehicle spacecr [...]
I had a quick thought about SpaceX that I wanted to blog about instead of doing a bunch of tweets. Basically, I think that how you judge SpaceX’s probability of success probably should depend strongly on whether you’re thinking as a competitor or as a customer.
If you’re one of SpaceX’s other competitors, you should probably take your expectations of SpaceX’s probability of success or failure (for reusability, Falcon Heavy working, etc), and bias them a bit more towards the success side. Underestimating your competition is a great way to obsolete yourself. So, if you’re a SpaceX competitor, and you’re being wise, you should probably base your plans on SpaceX being at least moderately successful at reusability, and eventually getting Falcon Heavy flying. You probably don’t need to assume that every word that cometh out of the mouth of the Elon is the veritable word of God or anything, but you should be really careful about making sure you’re being conservative–which in this case means assuming that they’re going to be somewhat successful at continuing to disrupt the industry. Anything less is setting yourself up for failure.
On the other hand, if you’re either a potential SpaceX customer, or a fanboy whose dreams are impacted one way or another based on SpaceX’s successes, you should probably bias your expectations more towards the failure side. You should assume that reuse is going to be harder than it looks (because unless you’ve actually done anything with flight vehicles it probably is harder than you think), take longer to work out, and be not quite as amazingly awesome as it theoretically ought to be. You should probably assume that while FH will probably fly, it probably won’t have the full performance expected initially, will have its own set of teething pains, and won’t be as amazing as you hope–at least at first. Overestimating your suppliers is just as stupid as underestimating your competitors. I’m not saying you should be gloom and doom on SpaceX, just temper your enthusiasm enough that you end up pleasantly surprised occasionally instead of disappointed if things don’t go perfectly. I’ve been watching commercial space since I was 16, and us commercial space fans are almost never under-optimistic.
Do I think SpaceX is going to make a huge difference in the industry? Of course. Do I think they’ll make reusability work at least for their first stage? Of course. I think it’ll take longer than fanboys expect, and be faster than competitors are hoping. I’m not entirely convinced they’ve figured out a way to scale up to the kinds of flight rates they’d need to hit their more ambitious cost targets, but even if they only get down to $1000/lb with a semi-reusable F9R, that’ll be awesome enough.
So to recap: Never underestimate your competitors, and never over-estimate your suppliers.
BERKELEY — The normally bland face of Uranus has become increasingly stormy, with enormous cloud systems so bright that for the first time ever, amateur astronomers are able to see details in the planet’s hazy blue-green atmosphere.
“The weather on Uranus is incredibly active,” said Imke de Pater, professor and chair of astronomy at the University of California, Berkeley, and leader of the team that first noticed the activity when observing the planet with adaptive optics on the W. M. [...]
A map released today by NASA's Near Earth Object (NEO) Program reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with random distribution around the globe. Released to the scientific community, the map visualizes data gathered by U.S. government sensors from 1994 to 2013.
The data indicate that Earth's atmosphere was impacted by small asteroids, resulting in a bolide (or fireball), on 556 separate occasions in a 20-year period. Almost all asteroids of t [...]
This new image from the NASA/ESA Hubble Space Telescope shows the super-rich galaxy cluster Abell 1413. Located between the constellations of Leo (The Lion) and Coma Berenices, the cluster is over 2 billion light-years from Earth. This image is dominated by a large and highly elliptical galaxy called MCG+04-28-097, with a halo of stars extending for more than 6.5 million light-years.
The galaxies at the center of Abell 1413 are found to be very highly elliptical whereas those at the periphery [...]
On Wednesday, Nov. 12, the European Space Agency's Rosetta mission successfully landed on the surface of comet 67P/Churyumov-Gerasimenko. Descending at a speed of about 2 mph (3.2 kilometers per hour) the lander, called "Philae," first touched down and its signal was received at 8:03 a.m. PST (11:03 a.m. EST).
Partially due to anchoring harpoons not firing, and the comet's low gravity (a hundred-thousand times less than that of Earth), Philae bounced off the surface and flew up to about six-t [...]
The Rosetta Mission lander is safely on a comet. One of Philae's feet appears at the bottom left of this spectacular image of the surface of C67/P Churyumov-Gerasimenko. Still a happy lander, Philae bounced twice before settling and returning images from the surface, traveling a kilometer or so after initially touching at the targeted site Agilkia.
A surface panorama suggests that the lander has come to rest tilted and near a shadowing wall, with its solar panels getting less illumination th [...]