Could we see a galaxy that is 50 billion light years away?
Could we see a galaxy that is 50 billion light-years away? No, because it would be beyond the bounds of our observable universe..
Is a large solid body that orbits a star?
It says a planet must do three things: It must orbit a star (in our cosmic neighborhood, the Sun).
It must be big enough to have enough gravity to force it into a spherical shape.
It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun..
Was one Greek thinker who held the heliocentric view?
Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center..
What expresses a greater or lesser amount?
Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center..
What expresses a greater or lesser amount?
It says a planet must do three things: It must orbit a star (in our cosmic neighborhood, the Sun).
It must be big enough to have enough gravity to force it into a spherical shape.
It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun..
What expresses a greater or lesser amount?
The most highly developed geocentric model was that of Ptolemy of Alexandria (2nd century ce).
It was generally accepted until the 16th century, after which it was superseded by heliocentric models such as that of Nicolaus Copernicus..
What is 1 AU astronomical unit quizlet?
"One astronomical unit (AU) equal the average distance between Earth and the Sun, about 150 million kilometers (93 million miles)..
What is the blank astronomical unit?
An Astronomical Unit (AU) is the average distance between Earth and the Sun, which is about 93 million miles or 150 million kilometers..
Which of the following stars is hottest?
Less than
Greater than | | A quantity is less than a given quantity | A quantity is greater than a given quantity |
| x\x26lt;1 | x\x26gt;1 |
.Who held the geocentric view which was accepted as true for over 1500 years?
A planet is a large object that orbits a star.
To be a planet, an object must be massive enough for gravity to have squeezed it into a spherical, or round, shape,.
It must also be large enough for gravity to have swept up any rocky or icy objects from its path, or orbit, around the star..
Who held the geocentric view which was accepted as true for over 1500 years?
The most highly developed geocentric model was that of Ptolemy of Alexandria (2nd century ce).
It was generally accepted until the 16th century, after which it was superseded by heliocentric models such as that of Nicolaus Copernicus..
- A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources.
