Berserker2067 Berserker2067

20-03-2018
Geography

contestada

Why do astronomers observing distant galaxies talk about looking backward in time?

Respuesta :

20-03-2018

because light takes time for us to observe it so when astronomers say that a certain galaxy or a certain star or a planet is for example 100 light years away they mean that it takes 100 years for light to travel that distance so you see the object how it was 100 years ago

Answer Link

Otras preguntas

what is the theme of henry huggins by beverly cleary and what is the beginning middle and end plot and the theme of ralph s mouse

what characteristic do most aquatic plants have in common? A) stems with lots of thorns to fight off predator B) Can survive without sunlight C) Can survive wit

KMnO₄ solution bromine solution a. red b. purple c. orange d. green e. blue

what did the national anthem urge the french to do?

What is the difference between a storyboard and a comic strip?

erika has 3 pieces of ribbon.each piece id 25 yards long.she needs to cut pieces that are 22 inches long.what is the greatest number of 22 inch pieces she can

What are three common adaptations in the deep pelagic realm?

Mike can cut a 40 foot by 20 foot yard with a push mower in 25 minutes. At this rate, how many more minutes would it take him to cut a 40 foot by 30 foot yard?

If you run 6. Miles an hour how long will it take to do 18 miles help quick pls

erika has 3 pieces of ribbon.each piece id 25 yards long.she needs to cut pieces that are 22 inches long.what is the greatest number of 22 inch pieces she can