# Astronomy Homework Help

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• Astronomy
New Horizons has two photographic instruments on board (each capable of trying a 'selfie') - LORRI and Ralph.LORRI (Long-Range Reconnaissance Imager) has a 1024 x 1024 pixel camera, with a...

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• Astronomy
Assuming that Cassiopeia has a right ascension of `approx ` 1hr (for example using `gamma ` Cas, the star in the center of the 'W'), then the sidereal time when Cassiopeia is on the meridian...

Asked by alison12122010 on via web

• Astronomy
The asteroid is a perfect sphere so the perimeter is given by `P = 2 pi r ` where `r ` is the radius of the sphere. The landing craft is 10km due 'North' of the drilled hole. Where 'North' is...

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• Astronomy
Orion's Belt is made up of three stars - Alnitak, Alnilam and Minatak (from left to right) - and is part of the Orion constellation, or 'The Hunter', Orion being a hunter from Greek mythology....

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• Astronomy
The angular diameter of an object is the size of the object expressed as an angular measurement when it is viewed from a particular spot. If an object is at a distance D from the point it is being...

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• Astronomy
In astronomy, when a body orbits the Sun, the shape of its orbit can be a circle or an ellipse. If the orbit is a circle, the Sun lies at the center of the circle and the distance of the body from...

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• Astronomy
Use the sunrise equation to find the direction of sunrise: cos(dir. of sunrise) = -tan(latitude of observer)xtan(declination of sun) I come up with 77 degrees, or NNE, roughly. Using the positive...

Asked by opli23 on via web

• Astronomy
The period of a planet orbiting a round a star, for example, the Sun, relates to th=e radius of the orbit according to the third Kepler's Law: `T^2 = (4pi^2)/(GM) a^3` Here, T is the period of the...

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• Astronomy
The diameter of the Earth is stated in the question as 7928 miles. Inch , Foot , Yard and Mile are units for measuring length in the U.S. customary system. The conversion factor for converting mile...

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• Astronomy
From Kepler's laws of planetary motion: `m_1+m_2=P/(2piG)(v_1+v_2)^3` So, `m_1+m_2=(2.5xx3.15xx10^7s)/(2pixx6.67259xx10^-11N.m^2.kg^-2)(2.78m.s^-1+8.33m.s^-1)^3` Again, applying the concept of...

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• Astronomy
In astronomy, a parallax refers to the angular distance between a celestial body and the observation point at earth's surface. Since we see the celestial body up in the sky, we measure the distance...

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• Science
This is true, but note that the question specifies that you're living on Mars, and it is the Earth that is in opposition, not Mars itself. By definition, opposition means that two objects (usually...

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• Astronomy
The mass of Earth's moon is `7.36 xx 10^22` kg. The Moon's Radius is `1.74 xx 10^6` m. The mass of the Earth is `5.98 xx 10^24` kg, and its radius is `6.37 xx 10^6` m. According to Newton's law...

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• Astronomy
It is a highly ambitious dream to follow, but never lose hope. There are opportunities aplenty for budding astronomers, as the field of astronomy is a relatively young one and thus, has thousands...

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• Astronomy
Astronomy should be studied by mankind because our survival is directly linked to the cosmos. The Earth is heated by its nearest star, the Sun, and its ocean tides are directly connected to its...

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• Astronomy
The Milky Way galaxy, in which the sun and planets reside, is a fairly typical spiral galaxy, flat and spinning around its center, with arms extending into space. It appears as a band of light from...

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• Astronomy
The planets in our Solar System can be generally divided into two different groups, the terrestrial planets and the gas giants. The terrestrial planets are closer to the Sun and consist of...

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• Nicolas Copernicus
Because the study of astronomy was closely tied to the theological doctrine of the Church during the 16th Century, the time in which Nicholaus Copernicus (1473-1543) was active, any academic theory...

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• Astronomy
Actually it is more correct to state that the Moon is moving away from the Earth slowly over time. If the Moon is between the Earth and Sun, then the Moon is moving closer to the Sun but if the...

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• Astronomy
The most commonly accepted theory on the formation of the universe is what is known as "the Big Bang" theory. Many astronomers believe that the origins of the universe began with the concentration...

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• Astronomy
There is overwhelming physical evidence that the universe is changing. The debate among astronomers is over whether the universe is expanding, a completely different question. The universe is...

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• Astronomy
When a star like our Sun reaches the final phase of its life, it burns out its supply of hydrogen and it begins to cool down and expand. This phase is called a red giant. The core begins to...

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• Astronomy
You may use the inverse square law that states the brightness decreases by the square of distance and since the brightness is expressed in magnitudes, hence, if you need to evaluate the change in...

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• Astronomy
In a manner of speaking, virtually all stars are variable; their values change throughout their lives according to the patterns and influences of their components and environments. The Sun, for...

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• Astronomy
We still don't have a definitive answer to this, and we may never know for certain. There are so many variables involved, and this all happened so long ago, that important evidence may have been...

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• Astronomy
The bad news is the Milky Way galaxy is going to collide with the Andromeda galaxy (also referred to as M31). The good is that it will not occur for four billion more years. What this means in...

Asked by astrosonuthird on via web

• Astronomy
Question one regards barycentric coordinates. The center of mass in the Sun-Earth relationship is not at the center of either body; it is a sort of average between the two. I can tell you without...

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• Astronomy
1. It doesn't make sense for galaxies to be the oldest observable objects; galaxies are composed of gas, dust and stars, all of which interact with electromagnetic radiation that we can detect. At...

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• Social Sciences
Space exploration has a few effects on the economy. Some of them are good and some bad. On the bad side, space exploration costs a lot of money. This is money that is taken from taxpayers. It is...

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• Astronomy
This is true; Pluto was reclassified as a dwarf planet in 2006. There are several reasons for this reclassification, and for why Pluto was originally considered a planet. Pluto was considered a...

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• Astronomy

Asked by astrosonuthird on via web

• Astronomy
Here, are a few steps to make a small rocket that may boost up to 5 metres- Step 1 - Take a toilet roll cardboard and cut slits at the bottom so that you can fan out the bottom. Step 2 - Tape the...

Asked by astrosonuthird on via web

• Astronomy
The Big Bang theory is the most commonly accepted scientific theory for the formation and age of the universe. According to the most recent measurements, the age of the universe is just under 14...

Asked by astrosonuthird on via web

• Astronomy
The answer to the question is A. While it is true that there are large impact craters all over the world and the Earth's magnetic poles have reversed several times over the course of geological...

Asked by katieannette2 on via web

• Astronomy
It is said that time goes slower in gravity. If one brother live in the plains and one brother in the mountains, the one living in high altitude will become older early. Am I right!! Time travels...

Asked by astrosonuthird on via web

• Astronomy
While it's true that space is expanding, this is a grossly oversimplified representation of the phenomenon. We don't yet fully understand the exact reason and mechanics of how the universe is...

Asked by user3981574 on via web

• Astronomy
To solve for this, the values for the mass and radius of earth is necessary. Mass of the sun-like star: `= Mass of the earth * 2.50x10^5` `= 5.9736×10^24 kg *2.50x10^5` `= 1.4934x10^30 kg`...

Asked by cmebecarolyn on via web

• Astronomy
I want a different answer! Sorry!

Asked by astrosonuthird on via web

• Astronomy
A retrograde revolution around the sun, i.e. a retrograde orbit, is not the same thing as apparent retrograde motion to an observer on Earth. While the descriptions of apparent retrograde motion...

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• Astronomy
CME stands for "Coronal Mass Ejection". They are explosions that take place near the surface of the sun. When this happens plasma is ejected out from the sun's surface. A significant amount of...

Asked by astrosonuthird on via web

• Astronomy
Actually, the recently retired space shuttle line of space vehicles never landed on the moon. The lunar landings were conducted between 1969 and 1972 with the Apollo missions. The space shuttle...

Asked by astrosonuthird on via web

• Astronomy
There are a variety of ways to approach this. One of the most direct sentences that can be given is that "Neil Armstrong was the first man to set foot on the moon." This is a sentence that is...

Asked by louie411 on via web

• Astronomy
Currently, life on Mars is not possible. We need the technology to travel there. Then we need the technology to maintain the harsh climate. We never thought we'd go on the moon though. I know...

Asked by xyziam on via web

• Astronomy
First, of all the planets around the Sun, the Earth has, through the laws of physics, maintained an atmosphere. This atmosphere serves two specific purposes in sustaining life. First, it protects...

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• Astronomy
Both Black holes and neutron stars are product of a dying star. When a star dies, it spent all of its energy and then collapses. Their difference lies on their parent star. For the purpose of this...

Asked by xyziam on via web

• Astronomy
Technically speaking you would not be able to splash water in space. The average temperature in deep space is about -270 degrees C. This is only a few degrees above absolute zero. So the water...

Asked by astrosonuthird on via web

• Astronomy
Is an aeroplane an anti-gravity chamber

Asked by astrosonuthird on via web

• Astronomy
Speculation on this possibility was first proposed by science fiction writers—a good example is The Big Eye by Max Simon Ehrlich (1950). Since the development of rocket technology (say, since...

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• Astronomy
Time travels slower in greater gravitational mass by the theory of twin paradox.

Asked by astrosonuthird on via web

• Astronomy
[eNotes cannot do your assignment or research for you but can happily help you get a better understanding of the topic you are interested in.] A probe is an unmanned vehicle, such as a satellite,...

Asked by astrosonuthird on via web