What are some problems of ground-based telescopes?
Ground-based telescopes can’t do the same, because the Earth’s atmosphere absorbs a lot of the infrared and ultraviolet light that passes through it. Nevertheless, space-based telescopes are expensive to build and difficult to maintain.
Why do we need Hubble Space Telescope?
The telescope has helped scientists understand how planets and galaxies form. Galaxies contain billions of stars. A picture called “Hubble Ultra Deep Field” shows some of the farthest galaxies ever seen. Pictures from Hubble help scientists learn more about the whole universe.
Does NASA add color to space photos?
When Hubble scientists take photos of space, they use filters to record specific wavelengths of light. Later, they add red, green, or blue to color the exposures taken through those filters. The result is full-color images that have a variety of purposes for scientific analysis.
Are galaxies colorful?
Galaxy Colors: The various colors in a galaxy (red bulge, blue disks) is due to the types of stars found in those galaxy regions, called its stellar population. Big, massive stars burn their hydrogen fuel, by thermonuclear fusion, extremely fast. Thus, they are bright and hot = blue.
Can Time Machine be invented?
Recent investigations into this question have provided some evidence that the answer is no, but it has not yet been proven to be impossible.” Even the slight possibility of time travel exerts such fascination that many physicists continue to study not only whether it may be possible but also how one might do it.
How much time is left in the universe?
According to the formulas used to calculate cutoffs, a universe that is 13.7 billion years old will reach its cutoff in about 5 billion years, his team concludes. For most people, the idea that a mathematical tool could be elevated to a real-world event might seem strange, but there are precedents for it in physics.
How old is the earth in human years?
4.54 billion years
How long would it take the average person to spend 1 billion dollars?
Imagine someone gave you a million dollars and told you to spend $1,000 every day and come back when you ran out of money. You would return, with no money left, in three years. If someone then gave you a billion dollars and you spent $1,000 each day, you would be spending for about 2,740 years before you went broke.