PDF The Martian Wave 2012

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Easiest to think of them as waves while they are traveling, but particles when they strike something. And those numbers only apply to light traveling in vacuum. Light passing through matter travels measurably slower. Allow me to quote directly from the article you just read since you seem to have missed it.

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The time from Earth to Mars varies between 4 and 24 minutes because earth and mars are both orbiting the sun, not each other. The distance between them therefore can change quite dramatically depending on where we are in our respective orbits. When Mars is directly behind Earth at the closest possible point, it is only four minutes away. When it is at the farthes point opposite us behind the Sun, it is 24 minutes away. The Sun meanwhile, which we orbit, remains at roughly 8 minutes away since our orbit around the Sun is very nearly circular.

Just came across this: Radio signals are electromagnetic waves, such as light or X-ray. In order to calculate the time of travel with this speed from Earth to Mars, we need to know the distance. When the Mars and the Earth are at the opposite sides of the Sun, the distance is the largest: approximately: million km.

The time needed for an electromagnetic wave to cover this distance is approximately: 21 minute. So the time of travel between Earth and Mars is between 4. Shab, you are calculating as if it is 2D plane, while DoctorZuber already mentioned the earth and mars elipses are of different plane. You are wrong. It is because the earth is often much further from Mars than Mars is from the sun.

The Martian - Teaser Trailer [HD] - 20th Century FOX

Guys guys guys u are over anylizing everything. Since the orbit of Mars is elliptical not circular! The distance between the Earth and the Sun is based on our orbit and is relatively constant about 92,,00 miles. Since both the Earth and Mars orbit the sun at different distances and speed, the distance between us constantly changes. At times Mars is on the other side of the Sun from us and other times it is on the same side. When Mars is closest to Earth it can be as close as 34,, miles, but when they are the furthest apart they can be almost ,, miles apart.

Hi, We gotta come to a common term for distance.

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Metric is proven to be easy and base of all science. When please switch to metric and use kilo meter. Just multiply miles by 1. Or kilometers by. Now you should be covered unless someone here starts talking about rods or leagues or something weird like that. Just to assure accuracy for the people visiting.

The Martian Scientific Accuracy: What the Movie Gets Right | Time

If you decide that you would like to do any maths related to this subject, here are the actual conversion values for U. It becomes very complicated to use any standard derived unit such as Newton Force expressed by miles and pounds. Further, 1 cubic decimeter equals 1 liter of water weighing 1kg which can also come in quite handy in everyday life. There is a good reason to stick to metric when discussing scientific matters.

The distance to Mars varies because the Earth and Mars are both orbiting the sun, but not at the same speed or the same distance from the sun. Sometimes we are on the opposite side of the sun from Mars, and the sun is therefore closer to us than Mars is. If the earth is on one side of the sun and mars is on the other side, then the distance from the earth to mars is greater than from the earth to the sun.

Seems pretty straight forward. All electromagnetic radiation travels at the speed of light. Gladson is wrong. Both earth and mars are in orbit around the sun. We make the trip in earth days. Mars requires earth days. Mars mean orbital radius to the sun is 1.

Round trip radio time depends on where earth and mars are relative to the sun. It varies, because Earth and Mars orbit the sun at different speeds. Sometimes they are on the same side of the sun and, at closest approach, light only takes about 3 minutes to travel between the two.

A supernova blast wave and the dunes of Mars – in pictures

The atmosphere has since been reduced by sequestration in the ground in the form of carbonates through weathering, [44] as well as loss to space through sputtering an interaction with the solar wind due to the lack of a strong Martian magnetosphere. It was observed that dust storms can carry water vapor to very high altitudes. Ultraviolet light from the Sun can then break the water apart in a process called photodissociation. The hydrogen from the water molecule then escapes into space. The obliquity axial tilt of Mars varies considerably on geologic timescales, and has a strong impact on planetary climate conditions.

Consideration of chemistry can yield additional insight into the properties of Oceanus Borealis. With a Martian atmosphere of predominantly carbon dioxide, one might expect to find extensive evidence of carbonate minerals on the surface as remnants from oceanic sedimentation. An abundance of carbonates has yet to be detected by the Mars space missions. However, if the early oceans were acidic, carbonates would not have been able to form.

Given the proposal of a vast primordial ocean on Mars, the fate of the water requires explanation.

Waves on Mars? Sand Ripples in Striking Red Planet Photos

As the Martian climate cooled, the surface of the ocean would have frozen. One hypothesis states that part of the ocean remains in a frozen state buried beneath a thin layer of rock, debris, and dust on the flat northern plain Vastitas Borealis. The existence of a primordial Martian ocean remains controversial among scientists. Alternate theories for the creation of surface gullies and channels include wind erosion, [63] liquid carbon dioxide , [9] and liquid methane.


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Confirmation or refutation of the Mars ocean hypothesis awaits additional observational evidence from future Mars missions. From Wikipedia, the free encyclopedia. It is not to be confused with Arctic Ocean. Mars portal. Lunar and Planetary Institute. Bibcode : meca. Grin eds. Lakes on Mars. Bibcode : Icar..


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Bibcode : NatSR Retrieved Bibcode : Natur. Bibcode : Sci Nature Geoscience. Science Daily. University of California—Berkeley. Astrobiology Magazine. Retrieved 19 February Bibcode : GeoRL..