Video of the Falcon 9 first stage doing a soft splashdown

Video taken from a chase plane during the July 14 Falcon 9 launch shows the first stage appearing from out of the low clouds, engines firing, vertical and ready for landing. The video, below the fold, also shows the stage slowing just before it hits the water, much like the test vehicles Grasshopper and Falcon 9R do.

Though SpaceX has already claimed their first stage had done this during the July 14 launch, this video proves it. All they need to do now to recover their first stage is to direct it to a land-based landing site.

Hat tip to Doug Messier and Parabolic Arc for this story.
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Comet 67P/C-G at 126 miles

Comet 67P/C-G at 126 miles

The image above was taken by Rosetta on August 4 from only 126 miles (234 kilometers). Unlike earlier images, this image is raw, uncropped and unprocessed. All I have done is rescale it to fit on my webpage. As they explain at the link,

As you can see, the comet is not centred in the full-frame image. This is a result of the rendezvous burn conducted the previous day, which adjusted Rosetta’s trajectory towards the comet. This effect is corrected for in the commands sent to the spacecraft after the new orbit has been determined.

The science team also notes that beginning tomorrow, the comet will be close enough that they will no longer have to provide a cropped close-up using the navigation camera and that this uncropped raw version will be sufficient.

Rendezvous and orbital insertion on Wednesday!

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An exoplanet that was once like a star

Astronomers, using WISE data, have discovered a strange exoplanet that is now as cool as a rocky planet, but was once as hot as a red dwarf star.

The current temperature of the object is 100-150 degrees Celsius, intermediate between that of the Earth and Venus. But the object shows evidence of a possible ancient origin, implying that a large change in temperature has taken place. In the past this object would have been as hot as a star for many millions of years.

Called WISE J0304-2705, the object is a member of the recently established “Y dwarf” class – the coolest stellar temperature class yet defined, added to the end of the sequence OBAFGKMLT (for historical reasons this is not in alphabetical order but follows a decline in temperature from O to T). Although its temperature is not far off that of our own world, the object is not like the rocky Earth-like planets and instead is a giant ball of gas like Jupiter.

As cool as this discovery is (no pun intended), I am most enlightened by the information in the second paragraph above. I had not realized that astronomers had added L, T, and Y classes to the low temperature end of their stellar classification system. For those new to astronomy, you remember the sequence of the first seven classes with the phrase “O Be A Fine Girl Kiss Me”. I wonder what how we can amend this phrase to include the L, T, Y, classes?

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U.S./Russian owned launch company ILS cuts workforce by 25%

The competition heats up: Business loses because of its recent Proton launch failures, combined with strong market competition from SpaceX, today forced International Launch Services (ILS) to cut its work force by 25%.

The company is anticipating a launch rate drop from an average of 7 to 8 missions a year down to 3 to 4. The article also noted one more additional detail that will affect the future market value of Proton:

So far in 2014, the commercial satellites ordered have been mainly at the lighter end of the market for geostationary-orbiting telecommunications spacecraft. This follows a couple of years in which heavier satellites dominated.

Commercial Proton rockets are typically used to launch heavier satellites one at a time. The marketโ€™s move to lighter spacecraft has benefited Space Exploration Technologies Corp. of Hawthorne, California, whose Falcon 9 rocket has accumulated commercial orders; and also benefited Arianespace, whose Ariane 5 heavy-lift vehicleโ€™s lower position is reserved for smaller satellites.

The weight of commercial satellites is almost certainly going to continue to drop in the coming years as technology improves and satellite companies work to reduce the cost to launch. In that climate, the Proton’s ability to put big commercial payloads into orbit will become a liability, not an asset. Ariane 5 has the same problem, in that it still needs a big payload for its upper position in order to make a launch cost effective.

Both Falcon 9, with its very low launch costs, and Russia’s new Angara rocket, with its modular design to handle all kinds of payload sizes, are better suited to this new competitive market.

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An Amtrak train abandons all of its passengers

Government-run transportation: An Amtrak high-speed train left New York City this weekend without its passengers, who were instead waiting to board on a different platform where railroad employees had sent them.

“They literally sent us to the wrong platform, and the conductor took off without any passengers,” Damien Miano, a stranded passenger told The Daily News. “The right hand didn’t know what the left hand was doing. It’s just so bizarre.”

Amtrak might make believe that it is a private company, but it has been a government entity for decades. Like the post office, it has no real incentive to make a profit and operate efficiently since all losses get covered by the federal government.

Coming soon to a hospital near you!

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Hamas propaganda becomes Israeli comedy

At the start of the Gaza war four weeks ago Hamas released a propaganda music video calling for the destruction of Israel and for Palestinians to “exterminate the roaches.”

The problem was that the video was in Hebrew, not Arabic, and Israelis have found it hilarious and have made it a summer music sensation!

Surprisingly, though, Israelis found the tune of โ€œAttack! Carry Out Terror Strikesโ€ extremely catchy. Making it even more fun was the flowery Hebrew, dotted with nonexistent words sung in a heavy Arab accent, all of which led to the song’s becoming a summer hit. It has since spawned numerous covers and tributes.

Videos at the link. I especially like the Smurf version.

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Market Street, San Francisco, April 14, 1906

An evening pause: This film footage has been circulating about on the web for several years. I even think I posted it previously but can’t find that post now. Either way, it was shot mere days before the San Francisco earthquake, and provides us a window into the reality of life then. The sound effects add to the reality, though they are not original to the time. They were added later and were dubbed in with what I think was great care. See the notes here for more details.

Hat tip Edward Thelen.

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