how does NASA receive pictures from unmaned space craft from jupiter?

Answer 1

they control it from Earth.

Answer 2

radio signals.

see here:
http://www.nasa.gov/centers/glenn/about/fs04grc.html

Cassini's data would be useless without a way to send it to Earth, and Earth will be over a billion miles away. To reach across this great distance, Cassini needs a powerful radio linkone that can send more information home with less distortion and using less energy than previously possible. To meet these goals for Cassini and future spacecraft, NASA Glenn's Communication Technology Division began exploring an advanced technology, a 32-gigahertz traveling wave tube (TWT) and its power supply, together called a traveling wave tube amplifier (TWTA). TWTA's are an advanced type of vacuum tube amplifier that offer lighter weight, higher reliability, and higher efficiency than solid-state amplifiers offer at high radiofrequency power levels (greater than 10 watts).

Although it proved too expensive to adapt Cassini's communication system to accommodate this 32-gigahertz TWTA, it was used for science experiments on Cassini and its power supply served as the technology prototype for the power supply for two 8.4-gigahertz TWTA's developed by the NASA Jet Propulsion Laboratory. These smaller TWTA's ultimately became Cassini's communication link, and Glenn provided technical support for this project. In addition, Glenn and JPL are planning a follow-on program that will use the results of experiments with Cassini's 8.4- and 32-gigahertz TWTA's to develop an improved 32-gigahertz TWTA for extraterrestrial communications from future spacecraft, making it even easier for these emissaries to call home.

Answer 3

New Horizons is a NASA unmanned mission first to flyby and study Pluto and its moons, Charon, Nix and Hydra. NASA may also approve flybys of one or more other Kuiper Belt Objects.

The craft was built primarily by Southwest Research Institute (SwRI) and the Johns Hopkins Applied Physics Laboratory (APL). The mission's principal investigator is Dr. S. Alan Stern of the Southwest Research Institute. New Horizons was successfully launched on January 19, 2006.

After a flyby of Jupiter early in 2007, it is expected to arrive at Pluto in July 2015 before leaving the Solar System.

Communication will be via X band, at a rate of 768 bit/s from Pluto's distance (38 kbit/s at Jupiter) to a 70 m Deep Space Network (DSN) dish.

The spacecraft uses dual redundant transmitters and receivers, and either right- or left-hand circular polarization. The downlink signal is amplified by dual redundant 12-watt TWTAs (traveling wave tube amplifiers) mounted on the body under the dish. The receivers are new, low-power designs.

In addition to the high-gain antenna, there are two low-gain antennas and a medium-gain dish. The high-gain dish has a Cassegrain layout, composite construction, and a 2.1 meter diameter (providing well over 40 dB of gain, and a half-power beam width of about a degree).

The prime-focus, medium-gain antenna, with a 0.3 meter aperture and 10-degree half-power beamwidth, is mounted to the back of the high-gain antenna's secondary reflector. The forward low-gain antenna is stacked atop the feed of the medium-gain antenna. The aft low-gain antenna is mounted within the launch adapter at the rear of the spacecraft. This antenna was only used for early mission phases near Earth, just after launch and for emergencies if the spacecraft had lost attitude control.

To save mission costs, the spacecraft will be in "hibernation" between Jupiter and Pluto. It will awaken once per year, for 50 days, for equipment checkout and trajectory tracking. The rest of the time, the spacecraft will be in a slow spin, sending a beacon tone once per week.

Depending on frequency, the beacon indicates normal operation, or one of seven fault modes. New Horizons is the first mission to use the DSN's beacon tone system operationally, the system having been flight-tested by the DS1 mission.

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Answer 4

http://www.spacetoday.org/SolSys/DeepSpaceNetwork/DeepSpaceNetwork.html

"NASA's Deep Space Network (DSN) is a collection of antennas at three sites around the globe used to communicate with interplanetary spacecraft missions."

It has more information about the DSN and how Microwave links are used for long distance communications....

The pictures are transmitted using techniques similar to those used on DSL broadband connections. (data compression and error correction). In fact, today's high speed broadband connection use techniques derived from the space program.

Answer 5

The photographs are digital images - they are transmitted via radio link from the craft to Earth. NASA was using digital imagining LONG before the rest of us had .jpg and .gif files :-)

To get the photos, NASA sends commands to the craft by radio; the craft goes through pre-programmed steps, and we get a new picture.

Answer 6

The same way you get pictures from your friends on your cell phone. They are transmitted using radio waves. The signal from the space craft just has to travel much much further.

Answer 7

"It sure looks like a green space alien strolling across the sky." No it doesn't. It looks like a formation in space that either emits, or reflects, the color green.

Answer 8

Satellite transmission

Answer 9

By subspace transmission of course!

Answer 10

easy there is a camera in the ship/shuttle that transmits and takes th ephotos