WISE Surveys The Skies
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- Опубліковано 30 лип 2010
- / sciencereason ... Calacademy: WISE Surveys the Skies. NASA's WISE mission has just completed its first survey of the entire sky.
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WISE is a NASA-funded Explorer mission that will provide a vast storehouse of knowledge about the solar system, the Milky Way, and the Universe. Among the objects WISE will study are asteroids, the coolest and dimmest stars, and the most luminous galaxies.
WISE is an unmanned satellite carrying an infrared-sensitive telescope that will image the entire sky. Since objects around room temperature emit infrared radiation, the WISE telescope and detectors are kept very cold (below -430° F /15 Kelvins, which is only 15° Centigrade above absolute zero) by a cryostat -- like an ice chest but filled with solid hydrogen instead of ice.
Solar panels will provide WISE with the electricity it needs to operate, and will always point toward the Sun. Orbiting several hundred miles above the dividing line between night and day on Earth, the telescope will look out at right angles to the Sun and will always point away from Earth. As WISE orbits from the North pole to the equator to the South pole and then back up to the North pole, the telescope will sweep out a circle in the sky. As the Earth moves around the Sun, this circle will move around the sky, and after six months WISE will have observed the whole sky.
As WISE sweeps along the circle a small mirror scans in the opposite direction, capturing an image of the sky onto an infrared sensitive digital camera which will take a picture every 11 seconds. Each picture will cover an area of the sky 3 times larger than the full Moon. After 6 months WISE will have taken nearly 1,500,000 pictures covering the entire sky.
Each picture will have one megapixel at each of four different wavelengths that range from 5 to 35 times longer than the longest waves the human eye can see. Data taken by WISE will be downloaded by radio transmission 4 times per day to computers on the ground which will combine the many images taken by WISE into an atlas covering the entire celestial sphere and a list of all the detected objects.
wise.ssl.berkeley.edu/mission....
. - Наука та технологія
@Neueregel Agreed BUT atm, the gray bar is not optimal. Atm, it sucks, but in the near future, we will all be thankful for it!
@DSAhmed
I complained about the "autoplay", and today I noticed that the "off" is now staying permanently "off" (before, you had to turn if off with each video). Also, the gray bar can be diminished.
@forashy616, my guess is that its because that by default the new YT bar has Autoplay 'On'. And that this awesome vid was next in one of your lists, such as the "Recommended for You" list.
@julsHz You're having entirely too much Fun! I think it's wonderful! :-)
Wish they mentioned if the satellite did some changes or fine tuning to the telescope as it makes the second pass.
@julsHz Gees. This is like magic to me. Way over my head but absolutely fascinating!
Muy interesante.
@derman077
By definition, anything that orbits something is a satellite, so our moon is one, so are space stations.
fascinating
@TheMarkOfTheBeast1 I totally agree, imagine if NASA could design a simple reusable spacecraft and make the blueprints available to private companies. Maybe they could even setup a factory to build them in high volume (if theres enough interest). This could be the jumpstart needed to get the private sector interested in space.
@NAWRARESNAW 1:42 Is that 2 SUNS lol
@youngn420 brown dwarfs reflect light like everything else so if there were any in our solar system, we would have discovered them a looong time ago since they are quite large compared to the planets and moons.
I LOVE IT!
@megaverse
The video clips were bad quality and there was very limited storage capacity. There is a clip on the Apollo 11 Video Library showing Buzz looking for a spot to install the reflector (apparently it shows him carrying it, but like I said the quality is really bad).
Also look up Lunar Laser Ranging Experiment. Or just go to watch?v=fuZiU70OcnY
i love this channel
peace, lardo.
@MsWanderer1 consider the resolution and size of the images, or filtration software working on them, etc. ... why not be digital :P, its sky after all
also if you have a camera that holds 1.3 million images, and can transfer them in 9 minutes .. usb or what ever ... i would seriously think about the quality of those images :P [Took your comment a bit out of context .. to make a point :P sry]
well, for instance, as i remember they simply didnt had enough processing power to handle the data pouring from the radio telescopes, one of the reasons of Seti and Boinc.
Ps. when you think about looking at 1.3 million images ... its going to take a bit longer than a year to simply check out each image ... keep in mind that they are high resolution and you will be basically checking out all the dots :P
and the time it would take to stitch them together ... even with a computer program .. lol
@DSAhmed ....ME TOO!!
@restlesspride666
Well it seems so on dictionary døt com
"an attendant or follower of another person, often subservient or obsequious in manner"
@amanwithdreams There have been several missions to the moon already... They brought back samples too and since its just a grey rock I can see why they didnt go back. They reached the moon and the race beat the russians to it so there was no reason to keep going.
Also its possible to see part of the moon lander that was left behind when they left the surface..
grate
@julsHz yes but in only 1 billion years it'll have grown too hot to sustain life on Earth! :O
Of course by then we've developed some more technology and we can probably either stay here or stop the heating process. It'll be awesome. Too bad we won't be around to see it.
@restlesspride666
Oh wow really? I suppose it makes sense. I discovered you can pretty much use it to mean anything that follows or is "lesser" than something else, like a student\master, or paparazzi\celebrity.
next may?
I never understand why we explore space before the sea.
Next MAY?!!! Scientists must be working hard theorizing before data is released to the average researcher. This is much longer than initial reports.
@megaverse
On the right side of the gray bar is a switch for "Autoplay" for "On" or "Off" . I switched mine to "off" and so far, it has remained that way. I complained on the UA-cam User Feedback Survey. In "Help" type in Search "autoplay subscriptions". Then go to"How in the HELL do I turn autoplay off?" Then to the comment from "Cadwalladee" on 3-20-10. It has a link with survey.googleratings that will take you to the site where I complained. Good Luck.
@julsHz Some people call the sun a dying star, and say were in for massive solar activity which will take down the grids and we will have no electrics for months. Michio Kakou was one of the people who said it . Me I dont know what to think like the rest of us LOL as the world is turning into a sci fi film hehe
@NAWRARESNAW Idd, they need to check all the images so they didn't take a picture of an alien spaceship by accident!... Or not.
@amanwithdreams
Never been further, aside from the reflectors installed on the moon that any amateur can use to measure the distance?
Or the debris left behind that a sufficiently strong telescope can spot?
If it was a fake, the Russians and Chinese would have raised hell, but they tracked the spaceship with their telescopes back then. There is no reason to assume it was a fake.
@TheMarkOfTheBeast1 So true! Its soooo exasperating how much money is wasted in stupid satelites and telescopes when the knowledge we get from them is totally useless!
@kiddhitta is that sarcasm? lol; if not - because that would be dumb.
@amanwithdreams what can we achieve sending more men to the moon?
how will it help us? is it worth it.
@julsHz Cool , Could it be there because our sun is on its way out You never know?
Like the video... but i HATE UA-cam'S GREY BAR!
An unmanned satellite? There are manned satellites? I thought those were called space stations. wtf ?
@DSAhmed everyone hates it. UA-cam IS MAKING IT WORSE FOR THEIR VIEWERS
No Amy Mainzer? :(
Is Ben Oppenheimer a post-op lesbian?
first.
wow. they dont know how something happened and they dont make up false answers to prove it? thats an interesting concept. why not just say it was god?