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What mind you expect to find if you were to come back to our solar system in 1 billion year?
Wiki User
∙ 11y ago
The Sun would be largely unchanged, though it would be only four billion years from its red giant stage.
If humanity managed to avoid killing itself and explored space, the planet Mercury would probably be gone as we would have mined it into nonexistence.
Venus might have been terraformed and would then be enjoying some primitive life.
Earth? Hard to say. We might have polluted it back to an azoic condition or left it altogether.
Earth's Moon would be much farther away. No more solar eclipses visible from the planet.
Mars would be pretty much as it is today; even if we managed to terraform it, its low mass would have let its atmosphere escape again.
Jupiter might have moved in closer to the Sun.
Saturn's rings would be gone.
The Ice worlds would be unchanged.
Of course, Nemesis/Shiva, the Sun's putative dwarf companion, might have made about forty passes, any one of which could have provoked a catastrophe.
We would in all probability have drifted out of the Origin Spur and into a region of either more or less interstellar matter.
All the constellations would be changed beyond recognition and all the bright stars of the Earth's sky would be burned out.
Wiki User
∙ 11y ago
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How can astronomers use rocks from the moon to estimate the age of the solar system?
14 billion years is a ball park figure for the age of the universe not the solar system. Depending on who you talk to, ages for the universe range from 11.3 billion to 13.7 billion depending on whose theory you accept. Oldest rock on the surface of the Earth date around 4.3-4.4 billion. Geologist use 4.5-4.6 billion as the age of the earth which becomes the bottom limit for the age of the Solar System. The age of the Solar system can be defined as when the Sun became hot enough to ignite, starting the fusion process. The elements of the Solar system existed long before the event of 1st light for the Sun, as the dust cloud which became our Solar System contracted forming the planets and Sun. If you call the birth of the Sun when it first gave off light-started the fusion process astrophyscists, astronomers and nuclear physicists using the law of conservation of energy and nuclear energy working backwards from calculating the mass of the sun sort of thing come up with varying answers depending on the assumptions you use. My personal guess is 5-6 billion for the Sun since 1st light.
How many revolutions around the sun has Earth completed in its entire history?
Somewhere around four or five billion. It's impossible to know for sure -- for one thing, when did the initial ball of rock grow large enough to be considered the Earth? And was the length of a year longer or shorter back then? -- but the solar system is believed to be about 4.6 billion years old.
Radioisotope dating of moon rocks showed that the age of the oldest lunar rock was closest to how many years old?
Rocks from the moon have been dated to about 4.5 billion years old. The oldest earth rocks don't date that far back because the earth "reprocesses" rock, and the oldest rocks we know of on earth date back to about 3.7 to 3.8 billion years. The earth and moon formed at approximately the same time, as did the rest of the solar system.
Which planet reflects the majority of sunlight back into space?
Of the eight planets in our solar system, Venus has the highest albedo. Thus, it reflects the largest percent of light striking it back into space.
What do satellites and probes do out of your solar system?
The farthest probe away from Earth is Voyager 1. As of 2011, it hasn't left the solar system, but it will relatively soon. When it does, it will continue sending back data about the parts of outer space that it is in. The craft Voyager two, which not quite as far away as Voyager 1, will do the same thing. The crafts Pioneer 10 and 11 are also headed out of the solar system, but we no longer have radio contact with them, so they will just be objects flying through space.
How does Halley's comet travel through the solar system?
The same way all other objects in the solar system travel, it will be back in 2061.
What does Halley's comet tell us about the solar system?
Well, here's the thing: comets have crazy, irregular orbits. Because of this, they're likely relics leftover from when the solar system formed. So they probably haven't changed much in the last 4 billion years or so. If we anayze what they're made of, it can give us a clue to the composition of matter back when the solar system first formed, which can give us clues about how things have changed since then, and how they might change again.
How can astronomers use rocks from the moon to estimate the age of the solar system?
14 billion years is a ball park figure for the age of the universe not the solar system. Depending on who you talk to, ages for the universe range from 11.3 billion to 13.7 billion depending on whose theory you accept. Oldest rock on the surface of the Earth date around 4.3-4.4 billion. Geologist use 4.5-4.6 billion as the age of the earth which becomes the bottom limit for the age of the Solar System. The age of the Solar system can be defined as when the Sun became hot enough to ignite, starting the fusion process. The elements of the Solar system existed long before the event of 1st light for the Sun, as the dust cloud which became our Solar System contracted forming the planets and Sun. If you call the birth of the Sun when it first gave off light-started the fusion process astrophyscists, astronomers and nuclear physicists using the law of conservation of energy and nuclear energy working backwards from calculating the mass of the sun sort of thing come up with varying answers depending on the assumptions you use. My personal guess is 5-6 billion for the Sun since 1st light.
What is the sun and the bodies around it?
The Solar System. In capital letters like this, the phrase refers to OUR solar system, back before we knew that planets are apparently quite common. The term "solar system" in lower case can refer to the system of planets and solid bodies orbiting any other star.
Why have they not carried people out of the solar system?
The few things that have been sent out of the Solar System were years on their way and are not coming back. It's hard to get people willing to sign up for that sort of mission.
Where is the voyager 2 at?
It is just leaving the solar system. We know this because the data it is sending back shows that the density if the solar wind is dropping dramatically.
Why have they not explored out of the solar system?
because if you travelallthe way out of the solar system then by the time you got back you would of died from the intense coldness or thespace ship would lose power before you reached the destination
How many revolutions around the sun has Earth completed in its entire history?
Somewhere around four or five billion. It's impossible to know for sure -- for one thing, when did the initial ball of rock grow large enough to be considered the Earth? And was the length of a year longer or shorter back then? -- but the solar system is believed to be about 4.6 billion years old.
Why do planets of the solar system revolve around the sun?
The solar system condensed out of a cloud of interstellar gas, some four and a half billion years ago. The gas was rotating, and that angular momentum became the various forms of revolution and rotation found in the planets and the sun. Ultimately, if our current understanding of cosmology is correct, the rotation of the original gas cloud can be traced back to the Big Bang. It derives from the original expansion of the universe.
Radioisotope dating of moon rocks showed that the age of the oldest lunar rock was closest to how many years old?
Rocks from the moon have been dated to about 4.5 billion years old. The oldest earth rocks don't date that far back because the earth "reprocesses" rock, and the oldest rocks we know of on earth date back to about 3.7 to 3.8 billion years. The earth and moon formed at approximately the same time, as did the rest of the solar system.
Where on your solar system does Pluto lie?
Pluto lies at the back of all the planets but now its not considered as a planet
What was considered to be the center of the universe back in the old days?
The Earth was considered the centre of the Solar System and the Universe.
