All planets in our Solar System have had a flyby.
The second largest planet in our solar system is Saturn, after Jupiter. In the entire universe, there may be planets larger than Jupiter, but due to current technological limitations, we have not yet detected any such planets beyond our solar system.
No, the sun is a star, not a planet. The hottest planet in the Solar System is Venus, coming in ahead of Mercury due to its thick atmosphere of mostly CO2 being able to hold in heat extremely well.
Not in our own solar system. The orbits of all the planets in the solar system have stabilized, and there isn't enough mass in the remaining asteroids to form a new planet. Else where, however, there are solar systems that are still forming, with new planets that are yet to form.
I don't believe we have rotation information about any planets outside the Solar System yet (orbital characteristics, yes; rotation, no). In the Solar System, Jupiter has the shortest rotational period at a little under 10 hours.
Currently that would be Eris, largest of our dwarf planets. There may be colder dwarfs in other star systems--but we have not yet detected them. There may also be colder dwarfs in our own solar system--Eris is simply the most recent find.
The largest unknown planet in our solar system is currently referred to as Planet Nine or Planet X. It is thought to be a large planet located beyond Pluto's orbit, but it has not been directly observed yet.
So far, Jupiter is the largest planet in our solar system.
No, there are millions of species on Earth.It is not yet known whether there are other species, on other planets in the Solar System. None is known so far, but too little has been investigated to be quite sure.No, there are millions of species on Earth.It is not yet known whether there are other species, on other planets in the Solar System. None is known so far, but too little has been investigated to be quite sure.No, there are millions of species on Earth.It is not yet known whether there are other species, on other planets in the Solar System. None is known so far, but too little has been investigated to be quite sure.No, there are millions of species on Earth.It is not yet known whether there are other species, on other planets in the Solar System. None is known so far, but too little has been investigated to be quite sure.
People don't know that yet, but in the science magazine they said there might well be a planet X!
we don't know yet. there isn't any in the solar system, anyway
Yes, its bigger than Pluto but hasn't been named yet
Within our solar system all the planets are unique. Within the universe, it is likely that there will be planets very similar to those in our solar system. This would mean that no planet is actually unique. However we can not prove this yet.
The planet with the most moons in our solar system is Jupiter. It has 63 confirmed moons.
There is no planet in how solar system that is named after Artemis or her Roman counterpart, Diana.
Unfortunately there is not yet a planet named Help. For a list of our Solar System moons see related question.
In our solar system the outermost planet 'til March 1999 was considered the same as the outermost planet after March 1999 - it was Pluto. In 2006, the IAU reclassified Pluto as a minor or dwarf planet and no longer a true planet - this demotion meaning Neptune would thereafter be considered the outermost planet in our solar system. It is of course possible there is a planet out there not yet discovered, which is in solar orbit, and large enough, in which case its distance might qualify it as 'outermost'.
Well 8 known planets!! Pluto is not considered a planet now. There is a new "planet" discovered but it is not a "planet" yet!! Itvis called Kepler16B