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Astronomy

Parent Category: Science
The scientific study of celestial bodies. Find questions on Constellations, Planets and more.
Mercury's atmosphere contains small amounts of hydrogen,helium, and oxygen. It also has even tinier amounts of sodium,potassium, calcium, and magnesium. Some of the gas particles comefrom the solar wind. Others are made by radioactive decay or whenmicrometeorites smash into the surface.
There is no such thing as up and down in space, so it just revolvesaround the sun.
It doesn't mean anything in particular. The Moon is low when it isrising or setting, and always looks bigger when it's near thehorizon. This is called the Moon illusion.
January is the month of the Full Wolf Moon. It appeared when wolveshowled in hunger outside the villages. It is also known as the OldMoon. To some Native American tribes, this was the Snow Moon, butmost applied that name to the next full Moon, in February.
Moons don't produce light.
Pluto's temperature varies with its distance from the Sun. We thinkthe maximum daytime temperature is about -223 degrees C.
No. For a substance to be in liquid phase there need to be certain temperatures and pressures. The Moon hardly has any atmosphere therefore no pressure to sustain liquids, any liquid will turn to gas or solid.
It's not the only reason, but the same force will produce lessacceleration in a body with more inertia.
On the Moon there is no atmosphere, so there is nothing to breathe.In addition we need the pressure of the air on our bodies. We alsoneed protection from the extremes of temperature found there.
The name is Chinese is 天蝎座 ( tiānxiē zuò ), which means 'The heavenly scorpion constellation'
As the Moon moves in its orbit around the sun, our view ofthe side illuminated by the Sun changes. Let us work through the cycle, starting with the full Moon . At full Moon , the moon rises at sunset and sets at sunrise.At 3rd quarter , the moon rises at midnight and setsat noon.
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The Moon always keeps the same side facing the Earth. So, whatever direction you name, there is some place on the Moon from which the Earth appears in that direction, and if the observer doesn't move to a different place on the Moon, then the Earth doesn't move either. It's always in the same...
On the 1st, 29th and 30th of November 1860.
absolute magnitude is how bright the star actually is andluminosity is how bright it looks.
Yes. Mass and weight are different quantities. The mass of the astronaut is always the same everywhere. The weight of the astronaut is the force on it due to gravity, which depends on the mass and the strength of gravity at the point on the planet, moon or space station the astronaut is standing...
I'm pretty sure there are more than just 2000 moons!!!! Ouruniverse is HUGE and continues to expand everyday, so there must belike MILLIONS OF MOONS! I can't exactly give you a number of howmany moons exist in the universe, because that would take more than5 billion years. Conclusion: there are a...
Feeling strange because you are weightless
The inflationary hypothesis was developed in the 1980s byphysicists Alan Guth and Andrei Linde. Inflation explains theorigin of the large-scale structure of the cosmos. Quantumfluctuations in the microscopic inflationary region, magnified tocosmic size, become the seeds for the growth of structure...
Changing the amount of heat energy usually causes a temperature change. However, during the phase change, the temperature stays the same even though the heat energy changes. This energy is directed into changing the phase and not into raising the temperature. That's why the temperature of water...
Gravitation follows an inverse square law, so a gravitational fieldwhile eventually small enough to be negligible will never benon-existent.
It would be about 200,000,000 feet short from the moon.
First you have to prove a parallel universe exists. It is theorised that they exist, but it is not proven. If they do exist, it is doubtful we could ever go there. We are designed for this one, for the physical laws the operate here and if we did go there, we probably wouldn't be able to survive. A...
Since the universe goes on forever (at least that's what we know ofit), we cannot determine the star that is furthest away. It isimpossible. However, the furthest star that we can see from Earthis the star Deneb.
This effect is caused by the atmosphere of the earth. The reasonfor the orange colour is due to the scattering of light by theatmosphere. When the moon is near the horizon, the moonlight mustpass through much more atmosphere than when the moon is directlyoverhead. By the time the moonlight reaches...
Not sure how scientific you want the answer to be but the first 3 things that come to this uneducated mind of mine are: 1. They both orbit another entity 2. They are both spherical in shape 3. Both have mass These 3 properties are true of many things but they technically answer the...
The Pano mirror lens is a great tool for taking 360° panoramic photos with the minimum of fuss: 1- Mount the Pano Pro unit and your camera onto your tripod, pointing vertically upwards, using the supplied quick-release adapter kit. 2- Focus the camera on the mirror and take one shot. 3-Use the...
5.88 x 1014 miles = 1 ly. 1 mile = 1/5.88 x 1014 ly. 5.417 x 1014 miles = 5.417 x 1014 /5.88 x 1014 ly =0.9213 ly
24,902 miles (40,075 kilometers) at the equator and 24,860 miles (40,008 kilometers) around through the poles.
People have only been to the moon. However, we can still see otherplanets using telescopes, satellites and probes.
About 470 million km or 292 million miles
Neptune has six rings, but they are really hard to see.
Jupiter has rings, but they are not as visible as those of Saturn.
The moon always appears larger at full moon because it is closer toEarth.
(circumpolar - our view of the constellation on Earth) . Constellations are circumpolar because they are only how we viewthem on Earth. The constellations would be different on anotherplanet or at another viewing point. They are circumpolar since theyare at different distances in relation to each...
There is no starting point. We don't know where Pluto startedorbiting so we cannot determine the answer to this question.However, we do know that it takes Pluto 248 years to orbit the sun.
If the planet was exactly in between Mars and Jupiter, it wouldtake 3645.029 days.
Perigee means minimum distance from the earth, so it varies withthe object and its orbit.
Asteroids were formed with our solar system and have not changed since then they are therefore about 4,600,000,000 years old.
The instrument used by astronomers to study light given off by stars is called a telescope, but one may add to the telescope an instrument called a spectrometer if you want to split the light into its components and using this determine what the stars are made of.
No: it lacks a breathable atmosphere; it has no form of water on its surface (barring a small amount of polar ice); the temperature ranges across hundreds of degrees Celsius from night to day, and the extremes are well without human ability to stand unless they have some serious protective equipment...
asteroids which have some kind of difference are known asdifferentiated asteroids and vice versa
Interesting question.. so far I have only come up with a few things of which I am not 100% sure about. + Earthquakes + Earth's orbit around the sun + The internet?
2000 miles ... then you will run into a black hole which will then take you to a portal that takes you back to your house....shortly after you will die from a hernia
Not only is it interesting, but it is also so we can, well, learn.
Jupiter actually has no land. It is gas. This makes it sort of hardfor someone to reach Jupiter to study it. If someone where totravel to Jupiter, they wouldn't land.
The moon can rise between 6pm and 9pm.
Yes, otherwise we wouldn't be able to see them.
The Earth's rotation is, in fact, slowing. But not at a rate thatanyone would notice-unless one happens to be around in 150 millionyears. Using eclipse data from as far back as 2000 BC, scientistsestimate that the period of Earth's rotation is growing byapproximately 1.7 milliseconds per solar day...
No. It receives more energy than it gives off. That is one of the reasons it is referred to as an "Ice Giant", along with Neptune.
Our solar system has a sun in the middle, planets circling the sun,moons circling the planets, and asteroids circling the sun. Thereare also comets circling the sun in a much larger orbit than theplanets.
The Sun produces energy by the nuclear fusion of hydrogen intohelium in its core. What that means is that, since there is a hugeamount of hydrogen in the core, these atoms stick together and fuseinto a helium atom. This energy is then radiated out from the coreand moves across the solar system. The...
The negatively charged particles in question are called electrons, and the flow of electrons is called electricity.
When the Moon was in its molten stage 4.5 billion years ago,lighter aluminum-rich material floated to the surface and createdwhat we know today as the Lunar Highlands. The heavier dark basaltssank toward the center of the Moon but later percolated upwardthrough cracks and fissures that were opened...
"Other" intelligent life? I think we have yet to prove that there is ANY intelligent life on our planet. There was a button to improve the answer but this answer requires no improving. From the smallest cell in our diverse bio system things tend to work together for survival. Now when we think of...
Earth, Mercury, Venus, Mars, Jupiter, Saturn. There were six.
Light does not travel around ... light travels in a straight l ine ... unless there is a massive gravitational source. But this question is lacking an object in the sentence, so I really dont know what you are trying to ask.
The Earth belongs to the terrestrial planets(Mercury, Venus, Earth,and Mars).
Almost all of the early astronauts were military (and some civilian) test pilots.
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No they aren't harmful.
The Romans knew of seven bright objects in the sky, the sun, the moon and five brightest planets. They named them after their most important gods. Saturn was named after the Roman god of agriculture. According to myth, Saturn introduced agriculture to his people by teaching them how to farm the land...
The Moon's orbital plane is tilted about 5 degrees to the ecliptic(the Earth's orbital plane), so the Sun, the Moon and Earth do notperfectly align every new moon or full moon. We can have an eclipseonly if the alignment of the three bodies happens along theintersection of the two orbital planes.
To calculate the velocity we would have to know the mass of the first object because we need it to find the force of gravity between the two bodies to then find out the net distance and time.
The Sun doesn't just emit heat and light, it produces a phenomenonknown as the solar wind. The thermal energy of the Sun's rays aretransferred to the solar winds, which are then transferred acrossthe solar system. However, as the solar wind gets farther andfarther away, the solar wind dies down and...
Jupiter rotates on its axis most rapidly out of all of the planets and is the closest, 9h 55m 30s for one full spin.
Almost all planets in the Solar system orbit the sunanti-clockwise when viewed from the northern side, with theexception of Venus, which orbits anti-clockwise. This is due to theinitial conditions of the gas cloud that was collapsing into theplanets while our Star system was just forming.
About 71% of Earth is cover in water.
Answer 1: It is not true that dogs live seven years for every one of a human. That is but a popular myth. And any source on the net - or your veterinarian - will confirm that fact. And "dog days" refers to the hottest days of the summer, usually between July and September, and has nothing to...
Refracting is more of a direct look at the star, but it doesn'tshow it very closely. Reflecting uses mirror's and can most of thetime give you a better view than a refracting. I own both and in myopinion reflecting works better.
Whenever it is at its perigee, i.e. its closest distance to Earth.This happens every 27,55 days, a time interval known as anAnomalistic Month. The moon perigee can vary between 356000km and370000km, so the moon's apparent size varies accordingly. However,you'd not be able to tell the difference...
All constellations have stars of all temperatures. Libra is noexception to that. So there isn't some specific temperature aboutthe stars in it.
Libra is a constellation, a specific part of the celestial sphere.So it is not a physical entity that could have a temperature. Ifyou are referring to the stars that can be found within itsboundaries, they can be any temperature that applies to a star(anything between 3000K and 20000K)
One AU is 148,597,871 km, so 0.7 AU is 104,718,510 km. The velocityof light and other electromagnetic radiations in free space is299,792.458 km/second, so the time for the round trip is (2 *104,718,510 / 299,792.458) seconds - or 698.6 seconds (11 minutes,38.6 seconds.)
Very slowly. Current technology can not get a human to Uranus(alive).
No , it is not a 'real' galaxy, merely one that exists inside the movie world. It is based upon Science Fiction, and you will not be able to travel to it.
no it can not the red spot on Jupiter is a giant hurricane that can destroy anything that enters it but it does not suck it in
A "Blue Moon" hence the phrase: "once in a blue moon" meaning very seldom.
The moon's average distance to Earth is about 384400km. Its closestapproach to earth brings it to 356000km. So it never really is50000km "closer to the Earth than usual" as long as you arereferring to its average distance by that.
Well, Depending on you question.: Either 1: The Photographer who works at PlayBoy Magazine. or 2: Astronomer. A man works looks at the stars and moons and planet in the universe.
One tail is gas, and the other ice. The darker, colored tail is gas, and the white easy-to-see tail is ice.