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Lots of things have not actually been seen. One such thing are black holes - because according to theory, they CANNOT be seen (at least, the Hawking Radiation would be way too weak to be seen); however, due to things happening in the surroundings of the black hole (basically, the accretion disk), some black holes are the brightest objects of the Universe!
What else can I help you with?
Which has not actually been seen by astronomers the Main asteroid belt the Oort cloud or the Kuiper belt?
The Oort Cloud has not been directly observed by astronomers, while both the Main Asteroid Belt and the Kuiper Belt have been observed and studied. The Oort Cloud is a theoretical region of icy bodies beyond the Kuiper Belt, and its presence is inferred from the trajectories of some comets.
How long does it take for Planet X to make a complete orbit?
Since we never seen Planet X, we don't know for sure. Astronomers are estimating its orbital period to somewhere between 10,000 to 20,000 years.
Who invented jupiter?
There is no single person who is credited with the discovery of Jupiter. Jupiter is one of the five planets that can be seen in the night sky without using a telescope or binoculars. The planet Jupiter has been known since ancient times and was observed for thousands of years by the people of many different cultures. Galileo was the first to observe Jupiter with a telescope, as Jupiter can be seen with the naked eye, the ancients probably the ones who discovered it. Jupiter can be seen from planet earth, so it is hard to tell who actually saw it first! We will never know when Jupiter was discovered. As it can be the third brightest thing in the night sky, it must have been known to the ancients. It's impossible to know. It's always been visible in the sky to the naked eye as long as man is known to have existed. The planet Jupiter is easily visible to the unaided human eye at night. As such it has been known to man since ancient times and therefore there is no attributed discoverer. The discoverer of Jupiter is not known since it visible with the naked eye. The fact that it is a planet and not a star was known in ancient times by the Chinese and Arabic astronomers. They were called 'wanderers' because they did not stay fixed like stars. It will never be known who discovered Jupiter. It has certainly been known since historical times and it would certainly have been seen by the earliest of humans as they looked up into the skies.
When did the last Haley's Comet pass by?
Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.Earth never passed through Halley's Comet. It has been seen from Earth on many occasions. This happens about every 75 or 76 years. The last time was in 1986 and the next time it is expected to be seen from Earth will be in 2061.
What do dark matter and dark energy in common?
They're both theoretical constructs and neither has actually been detected, measured, nor "seen".
What has actually been seen by Astronomers?
A black hole, exoplanets. It has always been inferred.
Has the main asteroid belt actually been seen by astronomers?
The Oort Cloud
Has main asteroid belts been seen by astronomers?
Yes (since 1801).
Has a main asteroid belt been seen by astronomers?
Yes (since 1801).
Who was the first to discover Halley's Comet?
It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.It has been seen by people for over 2000 years. It is not known who was the first person to actually see it. Many ancient astronomers would have seen it. It was not known as Halley's Comet then. It got that name when Edmond Halley, and English astronomer, predicted it would return in 1759. It is seen about every 75 or 76 years from Earth.
Where was Vishnu last seen?
He has never been seen
When was unicorns spotted?
Unicorns have never been seen. They are not real and never have been.
Which has not actually been seen by astronomers the Main asteroid belt the Oort cloud or the Kuiper belt?
The Oort Cloud has not been directly observed by astronomers, while both the Main Asteroid Belt and the Kuiper Belt have been observed and studied. The Oort Cloud is a theoretical region of icy bodies beyond the Kuiper Belt, and its presence is inferred from the trajectories of some comets.
Where was Last seen Artemis?
She has never been seen. She is a myth.
What star has never been seen?
you
What is something that has never been seen before?
If its never been seen before then it doesn't have a neme yet but probably some new sea creature
Have any planets never been seen in the solar system?
The number of planets never seen could be millions, billions, or trillions. We just have never seen them.
