-- It is very big.
-- It is very old.
-- Every distant object is receding from us with speed proportional to its distance.
You might even say that it looks as if space is expanding.
-- It looks the same in every direction. You might even say that it looks as if
we're in the center.
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Studies of the universe generally indicate that it is vast, expanding, and made up of various galaxies, stars, planets, and other celestial bodies. These studies also suggest that the universe has a consistent set of physical laws and principles that govern its behavior and evolution.
A person who studies space is called an astronomer. They observe and analyze celestial bodies such as planets, stars, and galaxies to better understand the universe.
An astronomer studies space, including celestial bodies such as planets, stars, and galaxies. They use telescopes and other instruments to observe and analyze the universe.
A cosmologist is a scientist who studies the universe as a whole, including its origin, evolution, and eventual fate. They use various tools such as mathematics, physics, and observation to understand the fundamental principles that govern the universe.
Yes, the noun 'astronomer' is a common noun, a general word for someone who studies the universe and the objects in it.
Astronomy is the scientific study of celestial objects, such as stars, galaxies, planets, and black holes, and their interactions within the universe.