http://news.nationalgeographic.com/news/2009/10/091019-32-new-planets-found.html
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15 comments:
It's amazing how the HARPS can detect the exoplanets by detecting wobbles in stars and dwarf planets. This reminds me of the star size video from last week. There are so many planet in the galaxy outside of our solar system. Then there will be millions of planets in other galaxies. This discovery may be amazing, but it is just the tip of the iceberg. There are millions more to be discovered!
Also adding on to my previous comment (sorry I'm being forgetful right now), all of these Earth-sized exoplanets are all good candidates for a new home after this Earth. All we have to do now is make sure the planets have everything we need and a source of transportation for a lot of people!
It's really interesting that humans are still evolving. It's something most people don't think about. I understand that only women are evolving, because they are the ones that reproduce. I wonder if evolution will make our brains bigger. That would be cool!
I happen to know that the planets discovered that would be the most like earth have to show that they have the right conditions for water, which is the ingredient of life. They also have to have a star quite like our sun.
Brandon, you have trying to make excuses to talk about this for weeks! Anyway, I think that the article is interesting, but there really is no point to it. We discovered the first exoplanet in the late '80s/early 90's. This really isn't a big leap. As a matter of fact, that is only about an eighth of all of the planets discovered. Plug that into 20 years, and that is nothing. Anyways, when they talk about Gliese 581C, they are partially incorrect. This planet was discovered several years ago, and since then they say that it isn't in the solar system's habitable zone (we are in the sun's habitable zone: liquid water can form and stays as water. It is too close to the star to sustain life. Instead, they have branded Gliese 581D a much better candidate for life. By the way, they name planets by the sun's name and the letter that follows (the first planet in the Gliese 581 system is GLiese 581 B, C, etc).
Declan, adding on to your comment, you also need a form of electricity (lightning in our case) or constant bombardment by meteors (late heavy bombardment in our case). The lightning was more effective for Earth because it creates organic compounds. The meteors might have been more useful if Earth already had water, because they might have organic compounds inside that are released when they impact.
I posted this article, because I thought it was a great advancement in technology and maybe with the finding of these planets we can learn more things about Earth. I can't believe how huge they can get though. That is just amazing. I think the article made learning about astronomy a little more fun and interesting than usual.
This article was very interesting. It is amazing how modern day scientists are able to keep discovering planets. Since I read the book Galaxies for my reading assignment, I knew a little bit more about the planets.
I thought that this article was very interesting!!! I never knew that there could actually be 32 other planets outside our solar system! I also agree with Brandon F on how it's amazing that the HARPS can detect exoplanets. Overall, this was an AMAZING article!
I also disagree with Howard because he states that it wasn't a very interesting article, and that the first exoplanet was discovered in the '80's or '90's, but I did some research and it says that the first exoplanet was discovered in 2007! Just TWO years ago!!!
The information given in this article was very interesting, but it was not presented in an exciting way. I thought it was fascinating that one of those planets was estimated to be about 7-8 times bigger (in mass) than Jupiter and how advanced the spectrogram was.
I thought that this was a great article. I thought that it was amazing that scientists are still finding more planets. Who knows in 10 years we could find more life forms that don't live on earth.
I wonder if there is life on those planets. I agree with Brandon F on how the exoplanets the size of the earth can be good for a new home. (I would like to stay on Earth though!)
Etta,
I think Howard is right: I think they were discovered in the late 80's. (I still think the article is interesting though).
Etta, actually, the first exoplanet was discovered in '94. You probably saw the article on nasa.gov stating they first temperature mapped two exoplanets in '07.
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