2006-09-13 19:54:08 · 23 answers · asked by Tripal 1 in Science & Mathematics ➔ Astronomy & Space
The features are about 201 km (125 miles) wide and over 1,600 km (1,000 miles) long, with characteristics that can be explained by water flow on the surface or in a submarine environment later buried by sediments. The large size of these channels implies that any bodies of water in the northern lowlands could have accumulated rapidly. The now buried channels may represent the means for filling an early ocean. ... The period of rapid interior heat loss may correspond to the time when Mars had a warmer climate, liquid water flowed on the surface, and the planet's surface was shielded from the solar wind by a global magnetic field.
2006-09-14 12:37:34 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Venus.
Because of Mercury's closeness to the Sun, the planet is very hot. But, surprisingly, it isn't the hottest planet in the Solar System, and temperatures on parts of the surface can be colder than the coldest temperatures possible on Earth.
Mercury has an extremely thin and non-protective atmosphere. Fly-bys by the Mariner 10 spacecraft in 1974 and '75 revealed a cratered surface very much like our Moon's. It appears that hydrogen and helium (likely from the solar wind) make up what thin atmosphere Mercury has. Even though Mercury rotates on its axis every 59 days, its orbital period is longer than its sidereal rotation. Therefore a solar day on Mercury (sunrise to sunset), takes about 176 days. Due to this fact, its closeness to the Sun and a very thin atmosphere, Mercury has the largest diurnal temperature spread of any planet in our solar system. It is understood that the sunny side may reach temperatures of 750 to 800 degrees F., while the nighttime temperature plummets to nearly -330 degrees F. The average temperature on Mercury is a balmy 354 degrees F.
Venus has a very thick atmosphere and it can trap heat which we called geenhouse effect.
2006-09-13 21:57:23 · answer #2 · answered by Lutfor 3 · 0⤊ 0⤋
According to NASA:
Mercury ranges from 467 to -183 celsius.
Venus has an average surface temperature of 457 celsius.
So Mercury's hottest temperature is barely more than venus' average temperature. The hottest temperature on Mercury is only near the point closest to the sun But venus has that high temperature all around the planet.
2006-09-13 22:20:10 · answer #3 · answered by Demiurge42 7 · 0⤊ 0⤋
It is Venus.
Read this:
Facts about the Planets
Largest planet Jupiter
Smallest planet Pluto
Planet closest to the Sun Mercury
Planet that comes closest to Earth Venus (Every 19 months, it gets closer to Earth than any other planet does.)
Fastest-moving planet Mercury (107,000 miles per hour)
Slowest planet Pluto (10,600 mph)
Warmest planet Venus
Coldest planet Pluto
Longest days Mercury
Shortest days Jupiter
2006-09-13 21:08:31 · answer #4 · answered by Amy J 4 · 0⤊ 0⤋
Mercury
2006-09-13 19:56:51 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Venus, heat from the sun penetrates the planets atmosphere and reaches the surface. The heat is then prevented from escaping back into space. The surface temperature can reach up to 900 degrees fahrenheit. Mercurys temperature can reach up to 800 degrees fahrenheit. As far as Mars, the temperature reaches -20 degrees fahrenheit in the afternoon and -120 at night.
2006-09-13 20:07:14 · answer #6 · answered by Anna 3 · 1⤊ 0⤋
Mercury keeps one side continuously towards the sun, this is the hottest place, Venus is next, next is earth, mars is colder than earth and the back side of mercury is the coldest
2006-09-13 20:11:04 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Overall, definitely Venus, but the illuminated side of Mercury must get extremely hot, being so close to the sun and with no atmosphere to distribute the heat.
2006-09-13 19:58:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Reassurance: A Kyrielle Cry not, youthful maiden all forlorn. We could also't wait to view that daybreak that element, no doubt, will quickly be the following Tho' seeming some distance, Mars is so close to for therefore long have we held our breath as regardless of the reality that a prepare for our death, yet, have no doubt and under no circumstances worry Tho' seeming some distance, Mars is so close to. we are able to not leave the earth too quickly Nor substitute our agenda to the moon Be good, carry again that waiting tear Tho' seeming some distance, Mars is so close to. we may be the following even as your call comes, The trumpet's fanfare, beat of drums waiting to advance a flag and cheer. Tho' seeming some distance, Mars is so close to.
2016-11-26 22:35:10 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Venus
2006-09-13 19:56:20 · answer #10 · answered by Helmut 7 · 1⤊ 0⤋