Jupiter is a lot bigger, so it looks brighter even though it is further away. Mars can be quite bright for a few weeks around the time of opposition, which happens every 780 days or just over two years, the next time 22-05-2016.
Jupiter, though more distant, is much larger than Mars. Its albedo (reflectiveness) is greater and it is visible for longer periods.
Yes, as the surface of Europa is made of ice- it is therefore reflective of the light which makes it look brighter and bigger.
Mercury, Venus, Earth, and Mars are all rocky planets, but Jupiter is a gas ball. Just knowing that, we'd have to guess that Jupiter's density is the lowest of the four. Now let's look up the densities: Mercury: 5,427 kg/m3 Venus: 5,243 Earth: 5,515 Mars: 3,933 Jupiter: 1,326 Yup; we guessed right.
Well there are many different ways to look at it. If you are just talking about in iur solar system there are only two planets. Mars and Jupiter. Mars is totally red, and Jupiter is yellow, red, brown and white.
Mercury, Venus, Mars, Jupiter, and Saturn can easily be seen with the naked eye. Visibility changes from year to year; you may want to look up information about specific planets, for specific months and years. For example, at the time of this writing (Oct. 2009), Jupiter can be seen after sunset, as a spectacularly bright star, high in the sky. It will set a few hours later.
Up! ; ) Jupiter is far brighter than any star. It's in the east on October evenings. Grab a pair of binoculars and you may even get to glimpse its' moons also.
It's best to look at them through a telescope at night.
This is a function of distance - an object appears smaller the further away it is. Although Jupiter is many times the size of Mars, the two planets appear to be about the same size because Jupiter is also much further away from Earth than Mars is.
They look like points of light. On first sight, a planet might be confused with a star (a very bright star, in the case of Venus, Jupiter, and sometimes Mars). Planets shine brightly and do not flicker while stars do not shine as bright (usually) and they always flicker, or sparkle.
Hardly right now (June 2013), since it is almost exactly in the direction of the Sun. However, when it is in another direction, it is the second-brightest "star" (planets look like stars), after Venus, which is also a planet; you might also say that Jupiter is the fourth-brightest object in the sky, after Sun, Moon, and Venus. (On rare occasions, Mars is slightly brighter than Jupiter.)
Hardly right now (June 2013), since it is almost exactly in the direction of the Sun. However, when it is in another direction, it is the second-brightest "star" (planets look like stars), after Venus, which is also a planet; you might also say that Jupiter is the fourth-brightest object in the sky, after Sun, Moon, and Venus. (On rare occasions, Mars is slightly brighter than Jupiter.)
Mercury, Venus, Mars, Jupiter, and Saturn are easily visible in the sky without a telescope or binoculars, if you know when and where to look. That information is often included on the weather page of the local newspaper.
They are different sizes and distances from us, and so they reflect different amounts of light.
Yes, as the surface of Europa is made of ice- it is therefore reflective of the light which makes it look brighter and bigger.
Mercury, Venus, Earth, and Mars are all rocky planets, but Jupiter is a gas ball. Just knowing that, we'd have to guess that Jupiter's density is the lowest of the four. Now let's look up the densities: Mercury: 5,427 kg/m3 Venus: 5,243 Earth: 5,515 Mars: 3,933 Jupiter: 1,326 Yup; we guessed right.
Mars is often called the red planet because it looks red when you look at it from space.
Look up in the sky and you will see. Polaris is actually quite dim, compared to other stars and planets. Even at it's dimmest, Mars is brighter than Polaris.
What do you mean by "biggest"? That it looks brightest? That its real brightness is the greatest? That it has the largest diameter? The greatest mass? The star that looks brightest for us is Sirius. Planets, however, also look like stars, and some of them look brighter than Sirius, including Venus, Jupiter, and sometimes Mars.