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Questions tagged [uranus]

Questions regarding Uranus, the 7th planet from Earth's sun.

14 votes
3 answers
4k views

Why is Uranus colder than Neptune?

Excluding dwarf planets, such as Pluto which are trans-neptunian objects obviously further away from the sun, so due to inverse square law less area of light and therefore less heat, of course things ...
Arjun's user avatar
  • 1,612
0 votes
0 answers
62 views

Has Hubble ever imaged Titania?

I can't find any non-voyager images of Uranus' largest moon - Titania. Did Hubble produce any? Titania is about 1.5 times smaller, but is about 1.5 times closer than Pluto - and we did have blurry ...
Noone AtAll's user avatar
10 votes
3 answers
4k views

Are spacecraft visits to Uranus and Neptune hard to plan?

Until today, Voyager 2 remains the only spacecraft to visit these planets. Are spacecraft visits to these planets hard to plan or develop?
user avatar
23 votes
3 answers
8k views

Why wasn't the planet Uranus recognized by ancient cultures?

Mercury, Venus, Mars, Jupiter, and Saturn have been identified by ancient astronomers as they are visible with naked eye at night. The planet Uranus, despite being visible during very clear nights, ...
user avatar
4 votes
2 answers
724 views

Why are heavier hydrocarbons not present in lower part of Uranian atmosphere?

I recently answered this question. While researching for the answer, I found one point quite counter-intuitive. The heavier hydrocarbons resides in stratosphere while methane, the lightest hydrocarbon ...
Nilay Ghosh's user avatar
  • 4,735
23 votes
5 answers
8k views

Why is Uranus called a "green planet"?

Uranus is called a green planet, although it appears blue in many of the photographs including those taken by spacecraft, like Voyager 2, Hubble, and JWST. NASA's Uranus page mentions it to be bluish-...
Dhruv Nayak's user avatar
7 votes
1 answer
2k views

Is Uranus the farthest object in Solar System that you can see with naked eyes?

The following text is from this article: The fact is, even at its brightest, Uranus is still quite faint. It’s barely perceptible as a dim speck of light to the unaided eye, even under dark skies. At ...
Nilay Ghosh's user avatar
  • 4,735
4 votes
1 answer
634 views

Calculating net gravitational force on Uranus

I want to calculate the net/total gravitational force which is being exerted on the planet Uranus. There are many objects in our solar system like the Sun, other planets, moons of other planets, moons ...
apk's user avatar
  • 949
8 votes
1 answer
1k views

How am I supposed to locate the planets Uranus and Neptune with a 70 mm f/5.7 refractor?

I can locate all of the planets other than Uranus and Neptune. This is mainly because they are very dim and I live where there is just enough light pollution so that I can't spot them. I have a Gysker ...
Oscar's user avatar
  • 99
24 votes
4 answers
4k views

Why is Neptune a darker blue than Uranus?

If Neptune and Uranus have similar composition then why is Neptune a darker blue than Uranus?
sno's user avatar
  • 1,464
-4 votes
2 answers
208 views

What is Jupiter's apparent magnitude as watched from Uranus?

Saturn's apparent magnitude from Uranus is +3.228. Jupiter orbits closer to the sun than Saturn. Can we therefore expect Jupiter’s apparent magnitude from Uranus to be dimmer than Saturn's, or is it ...
Constantthin's user avatar
-2 votes
1 answer
404 views

What is Saturn’s apparent magnitude at its brightest when viewed from Uranus?

Considering that the apparent magnitude scale is an inverted scale; what is the lowest apparent magnitude of Saturn that can be seen from Uranus. We are of course talking about when Saturn is viewed ...
Constantthin's user avatar
0 votes
1 answer
185 views

Will the planets be pushed outwards when the sun goes red giant?

When the sun goes red giant will the planets be pushed outwards towards the periphery of the solar system? If so, will this happen simultaneously to all planets or could, for example, a planet like ...
Constantthin's user avatar
13 votes
4 answers
4k views

Could Neptune be viewed with the naked eye from Uranus?

Which star or planet in our night sky can match what Neptune would look like when viewed from Uranus, or one of its moons? The answer would be for the most favourable condition, which is when Neptune ...
Constantthin's user avatar
6 votes
1 answer
1k views

Why is the magnetic axis of Uranus and Neptune off center?

It(Uranus) rotates on its side, tilted almost 98 degrees from the plane of its orbit around the sun. The axis of its magnetic field is tilted too, at a 59-degree angle from the rotational axis. The ...
Nilay Ghosh's user avatar
  • 4,735

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