Astronomy

bottom line on a graph were a number or object is put when you are graphing. they are always labeled

1. 1. The partial or complete obscuring, relative to a designated observer, of one celestial body by another.
   2. The period of time during which such an obscuration occurs.
2. A temporary or permanent dimming or cutting off of light.
3. 1. A fall into obscurity or disuse; a decline: "A composer . . . often goes into eclipse after his death and never regains popularity" (Time).
   2. A disgraceful or humiliating end; a downfall: Revelations of wrongdoing helped bring about the eclipse of the governor's career.

One year is the time that it takes for the Earth to complete one orbit around the Sun, approximately 365.24 days. The ".24" days part is the reason for Leap Years; this keeps the calendar in synchronization with the actual movement of the Earth around the Sun.

We are at the beginning of the third millennium of the common era (or AD, to those who prefer it).

Yes. We know the distance from the Earth to the Moon very precisely, on the order of millimeters or less. The Apollo astronauts left "corner reflectors" on the Moon's surface, and when we fire a laser pulse at it, we can detect the precise moment when the reflection gets back to our sensor. Because we know the speed of light VERY precisely, we can calculate the distance based on the time from when the pulse is fired to when the reflection is returned.

We can calculate the distances to other space probes the same way - we send a radio signal, wait for the reply, and calculate the distance.

* "For I am not so enamored of my own opinions that I disregard what others may think of them."

* "Every observed change of place is caused by a motion of either the observed object or the observer or, of course, by an unequal displacement of each."

* "Finally we shall place the Sun himself at the center of the Universe. All this is suggested by the systematic procession of events and the harmony of the whole Universe, if only we face the facts, as they say, 'with both eyes open'."

* "I am aware that a philosopher's ideas are not subject to the judgment of ordinary persons, because it is his endeavour to seek the truth in all things, to the extent permitted to human reason by God." * "As soon as certain people learn that … I attribute certain motions to the terrestrial globe, they will immediately shout to have me and my opinion hooted off the stage."

* "Seek the truth in all things, in so far as God has granted that to human reason." * "To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge."

* "Every observed change of place is caused by a motion of either the observed object or the observer or, of course, by an unequal displacement of each."

* "I shall now recall to mind that the motion of the heavenly bodies is circular, since the motion appropriate to a sphere is rotation in a circle."

* "Mathematics is written for mathematicians" * "If there be some who, though ignorant of all mathematics... dare to reprove this work, because of some passage of Scripture, which they have miserably warped to their purpose, I regaurd them not, and even despise their rash judgement."

1 trillion light years = 5.87849981 × 1024 miles.

About 30 km/sec

299,792.458 kilometers per second

yes there are many

All astronomers are scientists.

All astronomers are scientists.

All astronomers are scientists.

All astronomers are scientists.

He came up with the heliocentric model of our universe. THough galileo was the one who pushed it to be proven, copernicus was the one who realized that the sun was in the middle of the universe and we were orbiting around it compared to the church's ideas of the earth being in the middle of the universe and not rotating.

The Sun is near the center of the Solar System. Basically, planets, etc. move around the center of mass of the Solar System, which is near the Sun - but not exactly so, because the planets (especially Jupiter) also have some mass.

he found out the sun was the center of the universe

Ask yourself does if ∞+1=∞ then does ∞/∞= either ∞ or 1

You seem to be asking me to compare surface area to a volume; this doesn't generally make sense.

5.2

Usually it should be spherical. However, if it rotates very fast, it will be an elipsoid.

Usually it should be spherical. However, if it rotates very fast, it will be an elipsoid.

Usually it should be spherical. However, if it rotates very fast, it will be an elipsoid.

Usually it should be spherical. However, if it rotates very fast, it will be an elipsoid.

If you ask anyone he'll say Nicolas Copernicus, but about 1500 years ago Indian Master of Astronomy and Mathematics, Aryabhtta claimed that the Earth revolves around the sun and that the sun is the center of the solar system.

There are fads and fashions in physics as in other fields. In physics they are called schools of thought. These schools of thought constrain what is considered science. In Copernicus' day, the schools were constrained by Religious schools of thought that controlled science.

Thus the earth was considered the center of the universe as religious dogma and this dogma controlled science. The Big bang and Black Holes are part of the continuing Religious Dogma, "The Creation Story".

The answer is Longitude.

Well, friend, the most important force in astronomy is gravity. It's like a gentle hug that keeps everything in the universe together, from stars to planets to galaxies. Gravity allows us to understand how objects move and interact in space, creating the beautiful harmony we see in the night sky.

Man-made satellites orbit Earth by achieving a balance between gravitational pull and their forward momentum. When a satellite is launched, it is accelerated to a high speed, allowing it to enter a trajectory where the curvature of its path matches the curvature of the Earth. This creates a stable orbit, where the satellite continuously falls towards Earth due to gravity but also moves forward fast enough to keep missing it. The altitude and speed determine the type of orbit, such as low Earth orbit (LEO) or geostationary orbit.

No, absolute magnitude is not a measure of the actual amount of light a star emits. Instead, it quantifies the intrinsic brightness of a star as seen from a standard distance of 10 parsecs (about 32.6 light-years) away. It allows for comparisons of the true brightness of different stars without the effects of distance. The actual light output of a star is measured by its luminosity.

When you talk about astronomical objects, it is usually more appropriate to talk about their mass, not their weight.

A quasar is powered by a supermassive black hole; those have a mass of millions or billions times the mass of our Sun.