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this week at nasa

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outside the international space station

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expedition 35 flight engineers chris

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cassidy and tom marshburn of nasa

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conducted a 5-hour 30-minute spacewalk

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on the station's p6 truss to replace a

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suspect pump controller box which

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distributes coolant to the station's

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thermal control system the quick

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turnaround spacewalk was mounted just 48

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hours after an ammonia coolant lake

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developed on p6

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after installing the spare pump power

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was turned on and the system appeared to

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be working properly with no indications

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of ammonia leaking from the pump

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it's going to take some time it'll take

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some weeks for us to look at the system

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evaluate the system and and make sure we

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we did indeed stop the leak with the

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crew that we had

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they'd actually been out to this work

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site together

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on a previous shuttle mission so a lot

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of things worked in our favor to be able

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to pull this spacewalk together the

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spacewalk was the fourth for both

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cassidy and marshburn and the 168th

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spacewalk in support of station assembly

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and maintenance

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marshburn will return to earth monday

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night u.s time with expedition 35

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commander chris hadfield and cosmonaut

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roman romanenko in their soyuz

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nasa administrator charlie bolden

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delivered opening remarks at the humans

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to mars summit at george washington

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university the three-day event held by

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explore mars and gw's space policy

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institute provided a forum for nasa and

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the space community to discuss technical

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scientific and policy-related challenges

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associated with sending humans to mars

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by the 2030s there are technological

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gaps to sending humans to an asteroid

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and to mars

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and so every single

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moment of our time and every single

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dollar of our assets

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must be dedicated to developing those

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technologies that allow us to go beyond

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low earth orbit also discussed the

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planned nasa initiative to send humans

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to an asteroid and the importance of

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work by astronauts during long-duration

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missions aboard the international space

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station while not specifically designed

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to send humans to mars these endeavors

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will provide invaluable experience

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useful in planning and completing a

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successful human journey to the red

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planet also we need to think about what

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we carry in terms of medical equipment

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for the crew other things along those

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lines so we get a chance to experience a

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different risk environment where we have

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you know a protracted return capability

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back to the earth and i think that's

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what we're going to have to do as we go

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sky lab the nation's first space station

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launched the board of saturn 5 rocket 40

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years ago on may 14 1973

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the three crews that completed missions

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aboard the experimental facility not

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only set successive new records for long

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duration space flight but also completed

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about 300 experiments covering physical

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and biomedical science and earth and

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space applications the skylab program

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also yielded knowledge that was

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eventually used in development of the

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international space station just as the

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work being performed on the iss now is

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helping nasa develop new missions that

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will extend our reach farther into the

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solar system as humans move outward into

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deeper space exploration we'll probably

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learn things that we weren't expecting

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to learn just as we did in sky lab in

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iss and the next things we do will be

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just as astounding as the step from

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skylab to iss is after the final crew

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left skylab in february 1974

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the empty spacecraft circled the earth

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during a nasa tv and flight event on may

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7th expedition 35 flight engineer tom

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marshburn of nasa discussed the work

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being done on the international space

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station with members of the senate

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committee on commerce science and

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transportation subcommittee on science

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and space

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chaired by florida's senator bill nelson

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the subcommittee conducts oversight of

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nasa and several other science and

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technology related agencies can you

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explain how

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you know u.s private space companies uh

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are using the iss as a technology

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platform

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if they can do it that is

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an incredibly impressive technology

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demonstration going into space is not

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easy they're coming up with great

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efficiencies great new technologies

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built on what nasa's already done so

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that they can get probably cheaper

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better faster get things up to the space

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station the scheduled may 14th return to

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earth of marshburn and expedition 35

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crewmates chris hadfield of the canadian

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space agency and roman romanenko of the

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russian federal space agency marks the

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completion of their five-month mission

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meanwhile the next crew headed to the

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space station expedition 3637 soyuz

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commander if you order your chicken of

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the russian federal space agency nasa

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flight engineer karen nyberg and flight

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engineer luca parmitano of the european

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space agency fielded questions from the

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news media as part of their pre-launch

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activities at the gagarin cosmonaut

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training center in star city russia

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the crew is scheduled to travel to the

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kazakhstan launch site may 16th to

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complete training in advance of its

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launch to the station on may 29th local

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after being incommunicado with the

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ground during the recent solar

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conjunction the mars curiosity rover is

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preparing to get back to wheeling around

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the red planet and thanks to a software

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update the rover now has the ability to

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navigate more on its own

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the new autonomous navigation capability

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or auto nav enables the rover to

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evaluate and select safe paths of travel

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with less input from the rover team on

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the ground curiosity also received a

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software update to prevent the sensitive

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telescopic eye of the chem cam

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instrument from being burned by the sun

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the update is designed to make sure kim

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kam's eye is never pointed directly at

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the sun

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and the rover team is also confirming

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the calibration of curiosity's

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navigation cameras before driving to a

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new location

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plans are in the works for a short drive

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to a new drill site called cumberland

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about nine feet west of where

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curiosity's drill first touched martian

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a new google earth engine time lapse

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made from landsat satellite imagery

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captures the rapid growth from 1984 to

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2012 of las vegas nevada the fastest

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growing city in the u.s over the past

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two decades

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each frame of the time lapse is

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constructed from a year of landsat data

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and equates to about a 1.7 terapixel

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snapshot

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jointly managed by nasa and the u.s

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geological survey the landsat program

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has acquired images of the earth's

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surface since 1972 providing critical

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scientific information about our

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changing planet the time lapse is

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intro

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these bugs flightless fruit flies may

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someday help make airplanes more fuel

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efficient

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their work starts in a wind tunnel at

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nasa's langley research center where

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technicians install the edge of a wing

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that's covered with a special coating

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the task is to

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design a surface that prevents insect

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residues from sticking okay and the

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reason is

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that if you have any residue sticking it

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trips the airflow over it rough airflow

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increases airplane fuel usage as much as

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30 percent says nasa's environmentally

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responsible aviation project between the

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commercial coatings we've looked at and

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new coatings or and surfaces that we've

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engineered and modified we've looked at

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about 60 different

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surfaces for the bugs it's up close

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they're launched at the coated wing at

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about 150 miles an hour the researchers

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goal to narrow the field of coatings to

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a few

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that are effective enough to test on an

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it was ready set soar at the 2012-2013

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nasa student launch projects challenge

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more than 600 students launched rockets

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of their own design complete with

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working science or engineering payloads

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at the event sponsored by marshall space

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the goal was to see which rocket could

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come closest to the one mile mark and

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safely return its payload to earth of

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the 54 teams that participated 10

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received preliminary awards the grand

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prize of five thousand dollars from atk

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aerospace group will be awarded may 17th

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after final post flight analysis and

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reviews are complete

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three

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two

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one

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roger have left off and the clock is

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operating on may 15 1963 mercury atlas 9

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the final manned space mission of the

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u.s mercury program launched from cape

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canaveral florida roger you're looking

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beautiful on board the spacecraft named

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faith 7 was astronaut gordon cooper

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despite technical problems near the end

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of the flight cooper and faith 7

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completed 22 orbits of earth and

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splashed down safely in the pacific

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ocean

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and that's this week at nasa for more on

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these and other stories or to follow us