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If you mean within our Solar System: Mercury, since it is closest to the Sun.

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14y ago

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What is the highest recorded average speed for a solar-powered car?

The highest speed is 115 mph (71.5 metres per second).


Which planet travels round the sun at the highest and at the lowest speed?

According to Kepler's Third Law, the planets that are nearer to the Sun movefaster than the planets that are farther away. The closest planet - and thus thefastest - is Mercury; the farthest planet from the Sun is Neptune.==================================The way gravity works guarantees, that the closer an object is to the sun, the faster it moves, whether the orbit is almost circular or highly eccentric. This simplerule instantly lines up the speeds of the various solar system objects for us:Fastest speed:Comets which, at their closest approach, spend part of their time inside the orbit of Mercury.Their speed is highest when they're closest to the sun.Known planet with the highest average speed:The planet nearest the sun . . . Mercury.Known planet with the lowest average speed:The planet farthest from the sun . . . Neptune.Known dwarf-planet-like objects with the lowest average speed:Known objects farthest from the sun . . . Pluto, Eris.


Which planet travels around the sun at highest speed?

The closest one goes the quickest - Mercury.


Which planet rotates very quickly?

The planet with the highest rotational speed in our solar system is Jupiter, with a period just under ten hours.


What is the highest average speed a space shuttle can reach?

17,500 mph


What is the lenght of the day on the planet with the highest average surface temperature?

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What is the average orbital speed of the planet neptune?

5.43 km per second.


Which planet is travelling the most quickly around the Sun and what's its average orbital speed?

Mercury is the closest known planet to the sun, in terms of its average orbital distance. It's also the one with the highest speed in its orbit, and the one with the shortest period of revolution or 'year'.Mercury's average distance from the sun: 36 million miles (58 million km)Average orbital speed: 29.7 miles (47.9 km) per secondPeriod of revolution around the sun: 88 earth days


What is the difference between average speed and top speed?

Average speed is a value of all the speeds you have travelled at over a certain length of time. Top speed is the absolute highest or fastest speed that you have ever reached. (A one time speed value).


Which planet orbits sun at speed of 110000 kph?

Mercury is the planet in our solar system that orbits the sun at an average speed of about 170,500 kilometers per hour (at its fastest point).


What is the name for a planet's speed in its orbit?

It is the orbital velocity (speed and direction) or orbital speed (rate of motion). It is usually stated as "average orbital speed" but is actually "mean orbital speed."


Which planet has the highest average surface temperature and which has the lowest?

Venus has the highest average surface temperature due to its thick atmosphere that traps heat, creating a greenhouse effect. Neptune has the lowest average surface temperature, being the farthest planet from the Sun and having a frigid atmosphere.