# Astronomy Homework Help

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• Astronomy
By Newton's law of gravitation, the force ,F of attraction between mars of mass M and its satellite Phobos of mass m is given by: F = G Mm/d^2 ...........(1), where G is the universal...

Asked by won on via web

• Astronomy
The answer is 38.7036. (I have not given you the rough work)

Asked by lala2pretty on via web

• Astronomy
The most recent Blue Moon will take place on December 31, 2009. Some countries will experience a double Blue Moon. A Blue Moon is not set on a regular monthly pattern, though they usually occur in...

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• Astronomy
The Dark Rift in the Milky Way galaxy is what runs down the middle of the Milky Way. Many clouds of star dust run the middle of the galaxy and block the light of the stars in that area. The cold...

Asked by enotechris on via web

• Astronomy
The force exerted by the moon on the Earth is 2.98 x 10^31 joules. The gravitational force exerted by the Earth on the Sun is 3.58 x 10^23 joules These figures are derived by using the following...

Asked by lala25 on via web

• Astronomy
We can assume that the altitude of the satellite is x from earth and so it is earths radius R +x meter distant from the centre of the earth. The satellites speed is v . We also assume that the...

Asked by jayjay00 on via web

• Astronomy
Newton realized that two bodies orbit around a common center of mass, rather than one round the other. He therefore modified Kepler's 3rd Law to: (m1 + m2) P^2 = (d1 + d2)^3 = R^3 where R is the...

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• Astronomy
Some of the options provided are completely false, others are true, but were not discovered by Newton. Newton's discovery was D, that gravity is a universal phenomenon. While it is true that all...

Asked by lala25 on via web

• Astronomy
I will go with neela.

Asked by shawn123 on via web

• Astronomy
It is 2.011221777 year of Earth is the asteroid's period.

Asked by jayjay00 on via web

• Astronomy
Calendars have been around since people started marking time. Prehistoric peoples observed the night sky, and recorded the movement of the moon, planets and stars. A bone found near South Africa...

Asked by reece3 on via web

• Astronomy
The surface gravity on earth is known to be 9.81 for earth. Therefore the acceleration on 1kg of maas on earth is by Newton's Law of gravitation, force between earth and the 1 kg mass with distance...

Asked by mjgaudio on via web

• Astronomy
None of these questions has a clear answer because we are not able to study Mars as thoroughly as would be needed to answer them. No life has been found on Mars so as far as we know, there is no...

Asked by xtreme69 on via web

• Astronomy
Stars have different brightnesses. There's an astronomical brightness scale (see link) that categorizes the brightness of celestial objects. The brightest stars or objects are of course the most...

Asked by raudelmendoza on via web

• Astronomy
The brightness that we see is related to two factors: how much brighter one star is than another and how much closer one is than another. The brightness decreases by the square of the distance....

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• Astronomy
The question of who invented the first calendar is very hard to answer -- no one knows for sure. Many ancient societies had them. The Egyptians are, however, credited with the first solar...

Asked by mee123 on via web

• Astronomy
Hello! So, U want details of our planet's moon. I don't have time 2 write. U can find it in google.

Asked by vaugn on via web

• Astronomy
Edmund Halley (1656-1742) a contemporary of Isaac Newton (1642-1727) began addressing himself to the problem of cometary motion. With Newton's help, he began cataloguing and calculating the paths...

Asked by kelly1391 on via web

• Astronomy
Gravitational attraction is inversely proportional to the square of the distance from the center of gravity of a mass. In theory, there is no "cutoff" or "horizon" where the gravitational...

Asked by rukiazanab on via web

• Astronomy
If you define an "alien" as anything that, by our earthly definitions, is alive, then it stands to reason that they do in fact exist. However, the first definitive discovery of extraterrestrial...

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• Astronomy
If you were able to look down upon the Earth above the North Pole, you would see the planet rotating counterclockwise. For an observer on the planet surface, this motion generates the illusion...

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• Astronomy
Around 1859 the German chemists Robert Wilhelm Bunsen and Gustav Robert Kirchhoff began to examine the light generated when elements were heated to incandescence. By passing that light through a...

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• Astronomy
Although these terms may be used interchangeably, in referencing celestial bodies they may have different meanings. Rotation means a body spinning about its own axis, whereas revolution means a...

Asked by sudhanshu0609 on via web

• Astronomy
The current cosmological debate regarding the Universe includes theories that although it will continue to expand, it will slow over time, then begin to contract and come together in a "Big Crunch"...

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• Astronomy
According to the IAU (International Astronomical Union) Saturn, which is the sixth planet from the sun has "18 known moons that have received officially sanctioned names." The most famous of the...

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• Astronomy
The "atmosphere" of the sun is made up of three layers, photosphere, chromosphere, and corona: The photosphere represents the depth at which we can see no deeper toward the core of the Sun....

Asked by sheysel on via web

• Astronomy
Stars are made in nebulae, not from them. A nebula is a thick cloud of dust and gas in space. As the particles of the nebula swirl around, they may bump into each other. Because every object in the...

Asked by angelsfall-likestars on via web

• Astronomy
The perception of motion is contingent upon a frame of reference. If you're riding in a car, and your friend is riding in another running in the same direction and speed as you, relative to each...

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• Astronomy
There are nine different stages that a star must pass through before being “born.” The first stage is when a nebula collects and makes a mass of gas and dust then it begins to contract under...

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• Astronomy
According to the enotes dictionary, the definition of a system is that it is "A group of interacting, interrelated, or interdependent elements forming a complex whole" The concept of a system is...

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• Astronomy
Even though the Sun is much farther away from the Earth than the Moon, it exerts a stronger gravitational pull because it is so huge. However, the sun exerts a smaller tidal influence on Earth...

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• Astronomy
For any kind of life to exist as we understand it, certain biochemical functions must be performed. These reactions are contingent on a relatively stable temperature around where water is liquid....

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• Astronomy
We may be on the verge of finally discovering life elsewhere, and that extra terrestrial life may be near or on our neighboring planets. The recent landings on Mars have confirmed that water has...

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• Astronomy
The Southern Ring Nebula is in the constellation Vela, and is visible in the southern hemisphere. The nebula is an expanding cloud of gas surrounding a dying star. This nebula is also known as...

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• Astronomy
The sun is classified as a G2 star with a temperature of 5780 K. This makes the color white with a red tint when seen in space, but on Earth, since the sun's light must travel through miles of...

Asked by cookey on via web

• Astronomy
Simply put, a galactic year it is the Sun's period of rotation around the center of the Galaxy, equal to about 225 million years. The Wikipedia blog states: “The galactic year is the duration of...

Asked by enotechris on via web

• Astronomy
Recent research indicates that the star of Bethlehem could have been the planet Jupiter, among other possibilities. Due to its station in the night sky, its brightness, and its nature...

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• Astronomy
The following assumes you're in the Northern Hemisphere. First, determine your latitude (lat). If you subtract that from 90 degrees, you'll have the height of the sun in degrees from your position...

Asked by najmsalahi on via web

• Astronomy
Any formula to calculate the moon phase accurately for all time is deceptively complex! What follows is a simplification; the formula is accurate within 2 days for any date 2000-2009:1) Total the...

Asked by najmsalahi on via web

• Astronomy
The three layers of the sun's atmosphere are the Photosphere, Chromosphere, and Corona. The Photosphere contains the sunspots, the Chromosphere, the solar flares, and the Corona contains the solar...

Asked by shatiria94 on via web

• Astronomy
Gravity is the longest range force that comprise our Universe, and is a property of matter, so where there's matter, there's gravity. On Earth we experience it as the phenomenon of "falling...

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• Astronomy
The Martian Year can be expressed either in Earth Days (It takes 686.9726 Earth days for Mars to complete an orbit of the Sun.) But the Martian Day is different also, about 24 (Earth) hours and...

Asked by zero0master on via web

• Astronomy
An expanding universe implies some physical characteristics:1. The bulk of atoms are made up of electrons moving about protons and neutrons ("Matter")2. Gravity is attractive (Matter...

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• Astronomy
Our sun has no moons. It has planets that revolve around it and the moons then revolve around the planets. Currently, most scientists consider eight objects that orbit the sun to be planets but...

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• Astronomy
It isn't that Pluto died per se. Instead, Pluto is what it always has been—or at least, what it has been for millions, perhaps billions, of years. It's a small, rocky, planetoid. What happened...

Asked by lacibabyy00 on via web

• Astronomy
Niccolò Zucchi (1586-1670) is credited with inventing the reflecting telescope, or reflector, in 1616. He was an Italian Jesuit astronomer and physicist. With his telescope in 1630, he...

Asked by manning69 on via web

• Astronomy
What sort of information are you looking for? If general information, Mars is the fourth planet from the sun—the next out from Earth. The Martian day is just longer than Earth's—24 hours and...

Asked by chris820 on via web

• Astronomy
Astronomers are gaining knowledge daily as they continue to receive IR and radio images from various satellites and probes in space. It is currently thought that dark matter is approximately...

Asked by nazia on via web

• Astronomy
This has a more to do with rotation than geometry. The moon and the Earth rotate compatibly, and the moon revolves around the Earth in such a way that we do not generally see the other 41% of the...

Asked by daveggi on via web