Planets questions This is a list of recently added questions about planets. Play planets quiz and see all the questions. Which planet is this globe with such a bland look without any details?Uranus. Upper parts of Uranus' atmosphere are composed of condensed hydrocarbons, mainly methane crystal particles. Contrary to the rest of gas giant planets, it's hard to observe clouds and storm bounds.Created by: smyruaverage 61% UranusUranus7775NeptuneNeptune3409MercuryMercury587VenusVenus842Solar System riddles » Mars colonisation is a hype topic. What is the biggest threat for those wishing to take a part in a journey to Mars?Cosmic rays. The only efficient protection against high energetic cosmic radiation, one we are granted with, is Earth magnetic field. Both during a long flight to Mars and through the stay on the planet, that did not form electromagnetic field, astronauts would be exposed to ionization. Created by: smyruhard 52% low temperatureslow temperatures1598lack of oxygenlack of oxygen4679poor gravitypoor gravity1259cosmic rayscosmic rays8357astronautics riddles » Which planet of the solar system has the smallest surface?Mercury has a surface of 75x10^6 km^2, which is equal to 14,7% of Earth' surface.Created by: lanusienkavery easy 81% MercuryMercury6776VenusVenus659EarthEarth261MarsMars592space riddles » How many times is Jupiter's volume larger than Earth's volume?1,321 times. Jupiter is so big, that it is almost the size of a star. The smallest known red dwarf is just 16 percent larger in diameter than Jupiter.Created by: K.R.A.C.hard 57% 800 times800 times18881,321 times1,321 times574250 times50 times85710,000 times10,000 times1514astronomy riddles » How many planets does the Solar System consist of?Eight. These are Mercury, the Venus, the Earth, Mars, the Jupiter, the Saturn, the Uranus and the Neptune. The Pluto is excluded from the list since 2006, and it is classified as one of dwarf planets (not even the largest of them).Created by: Paweł Kołodziejczykeasy 74% sevenseven1227eighteight7767ninenine1279173173167astronomy riddles » How many planets in the Solar System are not named after a Greek or Roman god?One. It's the Earth.Created by: globalquiz.orgaverage 66% nonenone2253oneone10366twotwo1818threethree1234mythology riddles » Which planets in the Solar System have no natural satellites?Mercury and Venus. Only Mercury and Venus have no natural satellites.Created by: globalquiz.orghard 56% Mercury onlyMercury only3372Mercury and VenusMercury and Venus9547Mercusy and MarsMercusy and Mars1766there are no such planetsthere are no such planets2214astronomy riddles » Which planet is the brightest seen from Earth?Venus is much brighter than other planets. It is due to its proximity to the Sun (source of light), and bright clouds of sulfuric acid in its atmosphere.Created by: globalquiz.orgaverage 67% MercuryMercury1919VenusVenus14072MarsMars2314JupiterJupiter2527technology riddles » This is the aurora of Jupiter. What are the visible bright spots caused by?Jupiter moons. Jupiter's moons, especially Io (spot on the left), are powerful sources of auroras on Jupiter. These arise from electric currents along field lines, generated by a dynamo mechanism due to the relative motion between the rotating planet and the moving moon.Created by: globalquiz.orghard 42% volcanic peaksvolcanic peaks591atmospheric stormsatmospheric storms3791Jupiter moonsJupiter moons6679multiple magnetic poles of Jupitermultiple magnetic poles of Jupiter4797physics riddles » Which planet is the closest in size to Earth?Venus. The equatorial diameter of Venus is about 95% the size of the Earth's equatorial diameter. Moreover, its mass, density and orbit is also closest to those of Earth.Created by: Kasiahard 56% MercuryMercury1179VenusVenus8850MarsMars4891UranusUranus729technology riddles » Play Solar System quiz and see all the questions.