Why is it so difficult to make a direct image of a planet around another star?
What will be an ideal response?
Compared to how far stars are from us, their planets orbits are very small. Further, planets only reflect light (or weakly emit infrared radiation) and are therefore much (billions) of times fainter than the star. It is very difficult to make an image of such a faint object so close to such a bright object.
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A file extension includes a period (.) and a file format identifier.
Answer the following statement true (T) or false (F)
The oxygen in our atmosphere is produced by ________
Fill in the blank(s) with correct word
When Philadelphia's temperature is 40°F and Miami's temperature is 80°F,
A) Miami is twice as hot as Philadelphia. B) Miami is warmer than Philadelphia. C) both of these D) neither of these
What is the audible range of sound frequencies?
What will be an ideal response?