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Which planet is believed by astronomers might be the core of what used to be a much larger planet?
Wiki User
∙ 11y ago
The dwarf planet Pluto is believed by astronomers might be the core of a much larger planet
Wiki User
∙ 11y ago
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What is the smallist out of a planet a star and a galaxy?
Planets are usually much smaller than stars, certainly for our solar system. For another solar systems you might find a very large planet and in others systems you might find a very small red dwarf star or a small dense neutron star that has come to the end of its life. Here, the large planet of one system might be larger than the star of another.
Why does Mercury have an average density that is close to that of earth even though Mercury is a smaller planet?
That might be an indication that Mercury has a similar composition to Earth. For more details, check the Wikipedia articles on Earth, and Mercury, to see what is believed to be inside each planet.
Approximate radius of the largest planet?
The largest planet in our solar system is Jupiter with an approximate radius of 70,000 km (smaller in the polar direction, larger in equatorial due to its spin). The largest planet known might be the exoplanet (outside the solar system) called TrES-4 and thought to be about 1.7 times the size of Jupiter - but ithe definition for it and even potentially larger planetary candidates is still a subject of debate since it fits the characteristics of a brown dwarf (a type of small star) and the distinction begins to blur somewhat as a planet's size becomes large enough.
An object that might impact a planet?
pluto
What does a goldilocks planet look like?
Finding Earth-sized Goldilocks planets is a key part of NASA's Kepler mission, which uses an orbital deep-space telescope launched on March 7, 2009.The mission will survey and compile the characteristics of habitable-zone planets to find those that might provide Earth-like atmospheres and climates.
How Pluto is the smallest ''planet'' it is now a dwarf planet?
Pluto is NOT currently defined as a planet.Pluto is much smaller than was previously believed; when an additional object (Eris) was found that was believed LARGER than Pluto, the IAU decided to introduce a formal definition of what a "planet" was, presumably to avoid us from being "overrun" by hundreds of "planets", which might be discovered in the near future.
Why was Ceres first a planet?
Ceres was the first asteroid belt object to be discovered, and astronomers of the time had long speculated that a planet might exist between the orbits of Jupiter and Mars. Later, the discovery of other asteroid belt objects cast doubt on Ceres' status as a planet.
What is the distance from earth to the furthest planet in our galaxy?
Astronomers once believed that planets were probably rare and unusual, and that tere might not be very many planets. However, recent discoveries indicate that planets are far more common; in fact, almost every star that astronomers have closely observed is discovered to have some planets! So it is likely that the "furthest planet in our galaxy" is on the other side of the galaxy from the Earth. The Milky Way galaxy has a radius of about 40,000 light years, and our solar system is about 3/4 of the way out from the center. So the "furthest planet in our galaxy" is probably somewhere near 70,000 light years away.
Mercury why might this be a great name for the planet?
The planet Mercury is named after the Roman messenger god, which is entirely appropriate considering the planet orbits closest to the Sun and is thus the fastest moving. The planet's composition is not believed to have significant quantities of mercury (the element).
Where else besides the planet mars might we find signs of life in our solar system?
There MIGHT be life in on some of the larger moons; or even in outer space.
What is the smallest planet?
Mercury is the smallest planet in our solar system. Pluto might have been the smallest planet, but it has now been reclassified as a "dwarf planet." The smallest planet in our solar system now is Mercury. There might well be billions of smaller planets outside for solar system. The smallest exoplanet found so far is about twice the size of the Earth.
Which planet are you?
I might not be a planet . .
Do other planet or moons might support life no or yes?
Yes,Other planets could scientists believed some life were on other planets and signs of life
What is the smallist out of a planet a star and a galaxy?
Planets are usually much smaller than stars, certainly for our solar system. For another solar systems you might find a very large planet and in others systems you might find a very small red dwarf star or a small dense neutron star that has come to the end of its life. Here, the large planet of one system might be larger than the star of another.
What planet do astronomers believe has water?
Most planets in the Solar System have been found or speculated to have water. But at the moment only Earth is known to have water in the liquid state. Both polar caps on the planet Mars are known to have frozen water. It is also speculated that under the crust of some moons in the outer solar system, liquid H2O oceans may exist. Outside the solar system no one knows, but just recently astronomers have discover the exo-planet Gliese581g, which seems to be the right temperature that might support the existence of liquid water on its surface.
Who was the first astromer?
Nobody knows, the first astronomers might never have been recorded, and if they were we might not have uncovered their work.
Why does Mercury have an average density that is close to that of earth even though Mercury is a smaller planet?
That might be an indication that Mercury has a similar composition to Earth. For more details, check the Wikipedia articles on Earth, and Mercury, to see what is believed to be inside each planet.
