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The Hubble is a thing scientist have been using to see what is undiscovered in space like planets or what are on the planets we already have. The Hubble has been in space for 30 years and sent back so many images of space and can see ultra violet light so we know about more stars than we did before the Hubble. The Hubble has also discovered so many more galaxies for us.

National Geographic Kids

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Hubble Space Telescope Article, Hubble Maintenance Information, NICMOS Facts -- National Geographic

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Read a National Geographic magazine article about Hubble telescope and get information, facts, and more about Hubble maintenance.

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Hubble celebrates 35 years in orbit with 4 stunning new images! ✨

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In the future how will we find a planet? The Hubble maybe? I wonder how we might get there if it supports life? Yes, there is space crafts but if we need to transport a lot of people and so far, what are we to use maybe a space craft that is big and never runs out of gas?

National Geographic Kids

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Their solar system would be different. What do you think it would look like how big are the planets? Do they call their planets anything? Do the planets orbit a gigantic star that is really hot? Do all of their planets support life? Do they have the same type of life as us?

National Geographic Kids

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Is there people and living things on those planets that may support life. If there is do they wonder is there anyone else out there.

National Geographic Kids

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When we find another planet I want to compare it to our home planet earth because then we can see how different it is to our planet and it might be similar.

National Geographic Kids

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The biggest galaxie the Hubble has found is 'El Gordo'. It is 7.3 billion light years away. 'El Gordo' does not have any planets in it. https://www.google.com

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NASA's Hubble Space Telescope has weighed the largest known galaxy cluster in the distant universe and found that it definitely lives up to its nickname: El Gordo (Spanish for "the fat one").

By precisely measuring how much the gravity from the cluster's mass warps images of far-more-distant background galaxies, a team of astronomers has calculated the cluster's mass to be as much as 3 million billion times the mass of our Sun. The Hubble data show that the cluster is roughly 43 percent more massive than earlier estimates based on X-ray and dynamical studies of the unusual cluster.

"It's given us an even stronger probability that this is really an amazing system very early in the universe," said team lead James Jee of the University of California at Davis.

A fraction of this mass is locked up in several hundred galaxies that inhabit the cluster and a larger fraction is in hot gas that fills the entire volume of the cluster. The rest is tied up in dark matter, an invisible form of matter that makes up the bulk of the mass of the universe.

Though galaxy clusters as massive are found in the nearby universe, such as the so-called Bullet Cluster, nothing like this has ever been seen to exist so far back in time, when the universe was roughly half of its current age of 13.8 billion years. The team suspects such monsters are rare in the early universe, based on current cosmological models.

The immense size of El Gordo was first reported in January 2012. Astronomers estimated its huge mass based on observations from NASA's Chandra X-ray Observatory and galaxy velocities measured by the European Southern Observatory's Very Large Telescope array in Paranal, Chile. They were able to put together estimates of the cluster's mass based on the motions of the galaxies moving inside the cluster and the very high temperatures of the hot gas between the cluster galaxies.

The challenge was that they noticed that the cluster (catalogued as ACT-CL J0102-4915) looked as if it might have been the result of a titanic collision between a pair of galaxy clusters the researchers describe as "seeing two cannonballs hit each other."

"We wondered what happens when you catch a cluster in the midst of a major merger and how the merger process influences both the X-ray gas and the motion of the galaxies," explained John Hughes of Rutgers University. "So the bottom line is that because of the complicated merger state, it left some questions about the reliability of the mass estimates we were making."

"That's where the Hubble data came in," said Felipe Menanteau of the University of Illinois at Urbana-Champaign. "We were in dire need for an independent and more robust mass estimate given how extreme this cluster is and how rare its existence is in the current cosmological model. There was all this kinematic energy that could be unaccounted for and could potentially suggest that we were actually underestimating the mass." The expectation of "unaccounted energy" comes from the fact that the merger is occurring tangentially to the observers' line of sight. This means they are potentially missing a good fraction of the kinetic energy of the merger because their spectroscopic measurements only track the radial speeds of the galaxies.

The team used Hubble to measure how strongly the mass of the cluster warped space. Hubble's high resolution allowed measurements of so-called "weak lensing," where the cluster's immense gravity subtly distorts space like a funhouse mirror and warps images of background galaxies. The greater the warping, the more mass is locked up in the cluster. "What I did is basically look at the shapes of the background galaxies that are farther away than the cluster itself," explained Jee.

The team's next step with Hubble will be to try to get a large mosaic image of the cluster. It doesn't fit into Hubble's field of view. It's like looking at a giant's head and shoulders from the side, say researchers. "We can tell it's a pretty big El Gordo, but we don't know what kind of legs he has, so we need to have a larger field of view to get the complete picture of the giant," said Menanteau.

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Hubble Finds That Monster 'El Gordo' Galaxy Cluster Is Bigger Than Thought - NASA Science

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NASA's Hubble Space Telescope has weighed the largest known galaxy cluster in the distant universe and found that it definitely lives up to its nickname: El