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I presume that you are talking about the streak seen on the kind of all-sky maps that look like horizontally-elongated ellipses. Recent maps of this kind have come from infrared and x-ray satellite observations, and from the Planck microwave background satellite, to name a few.
This streak is our Milky Way galaxy. Since we're inside the galaxy, and the galaxy is quite flat, it looks to us like a narrow band going all the way around the sky. The maps you see are often oriented so that the band of the galaxy runs horizontally across the center of the map.
Because objects in our galaxy are so much closer to us than the external galaxies, any radiation sources in our galaxy, though they might be weak, appear much brighter than extragalactic sources. So the galaxy is a strong feature in these maps. One of the first things that is done in situations where the galaxy's sources are not of interest to the study, is to subtract the Milky Way's contribution to yield a map that doesn't have that bright streak.
What else can I help you with?
Do comets streak across the sky when they pass by earth?
yes they do streak
Use the word streak in a sentence?
I like that streak of blonde in your hair. I saw a jet streak across the sky.
What happens if you rub the mineral across a streak plate but the mineral does not leave a streak?
The lack of a streak would indicate that the mineral is harder than the streak plate, or the color of the streak is the same as the color of the streak plate.
How would you use the word streak in a sentence?
The comet was seen to streak across the evening sky.
Was is sulfur's streak?
Sulfur's streak is a pale yellow color. This is the color left behind when a mineral is scraped across a porcelain tile to test its streak.
What is the streak of talc?
Talc has a streak color of white. This means that when scraped across a white, unglazed porcelain plate, talc leaves behind a white streak.
What name is given to the dust that is left on a surface after a mineral has been scraped across it?
The dust left on a surface after a mineral is scraped across it is called streak.
What is the first step to measure the streak of a mineral?
To measure the streak color of a mineral, the first step is to obtain a sample of the mineral you want to test. Step 2, find a nice, clean ceramic tile with a white unglazed back. Step 3, using a corner of your mineral, move it across the back of the tile while pushing down enough to see the streak and its color. Step 4, compare the streak color with samples of known minerals, from color photos in a book of minerals, or from a written description of minerals and their streak colors.
What is the powder left behind on a streak plate called?
The powder left behind on a streak plate is called a streak. It is produced by scraping a mineral sample across the plate to reveal its color and texture. This streak can be compared to a mineral's known streak color to help with identification.
How can you beat the three minute battle on Lego universe?
you have to get a nuke on a 25 kill streak or a moab
What is the color of a minerals powder called?
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
What is a yellow spider with a red streak down the middle called?
a beespider :)
