Astar is 10 light years away from the earth. Suppose it brightens up suddenly today, after how long can we see this change?

1 answer:

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The phrase "light year" is a distance ... it's the distance that light travels through vacuum in one year.

When you look at an object located 1 light year away from you, you see it as it was 1 year ago.

If a star located 10 light years away from us suddenly brightens, or dims, or explodes, we see the event 10 years later.

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GaryK [48]

<h3>Answer;</h3>

too small to be seen with an optical microscope 

<h3>Explanation;</h3>

An electron microscope is a type of microscope that is used to observe very tiny specimens whose features can not be observed by other types of microscopes. It uses a beam of electrons to generate an image of a given specimen whose features can be clearly observed and studied.
Electron microscope has very high resolution and magnification as compared to other optical microscope hence can be observed in the study of micro-organisms such as viruses which would be difficult to study their features using optical microscopes.

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erastovalidia [21]

The body fights off an infection by a fever since the higher temperature will denature what is causing the infection

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Elena-2011 [213]

sorry accidentally posted here.

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