NASA's Kepler spacecraft dead after discovering thousands of planets
This discussion thread was locked as off-topic by JudyM (a host of the Latest Breaking News forum).
Source: CBS News
NASA's Kepler spacecraft, which discovered more than 2,680 exoplanets orbiting distant stars and allowed scientists to statistically show billions more must exist across the Milky Way, has finally run out of fuel, bringing one of NASA's most scientifically productive projects to an end after an extended nine-and-a-half year mission, mission managers said Tuesday.
"The Kepler mission has been an enormous success," said Bill Borucki, the original Kepler principal investigator and leader of the team that convinced NASA to build and launch the $692 million mission in 2009.
"We have shown there are more planets than stars in our galaxy, that many of these planets are roughly the size of the Earth and some, like the Earth, are at the right distance from their star that there could be liquid water on the surface, a situation conducive to the existence of life," Borucki said.
Kepler also found planets "completely unlike those in our solar system," he told reporters. "Some of those, in fact, might be actual water worlds. We've also found planets that were formed at the beginning of the formation of our galaxy six-and-a-half billion years before the formation of our own star and before the formation of the Earth. Imagine what life might be like on such planets."
Read more: https://www.cbsnews.com/news/nasas-kepler-spacecraft-dead-after-discovering-thousands-of-planets-2018-10-30/
There's much much more information in the linked article. If your any kind of science junkie it's worth reading the entire article, very interesting stuff.
brooklynite
(96,882 posts)exboyfil
(18,366 posts)I wonder how many times life started and stopped. Of course most of these worlds would have very little heavier elements available for the formation of complex chemistry that seems to be a necessary condition for life. You need the formation of a 2nd or 3rd generation star for that.
brush
(61,033 posts)from their stars and have water on them? Perhaps inhabitants from older, more advanced worlds are the ones that have visited usaka, UFOs?
exboyfil
(18,366 posts)to produce the heavier elements. The later stars, like our own, form in the nebula left behind by that star. That gives us elements such as carbon and iron (which is formed by a supernova).
This is one reason why we might be early to the party for life in the universe.
https://www.space.com/16943-supernova-explosion-solar-system-formation.html
brush
(61,033 posts)There are billions of stars/nebulas/planets formed in those billions of years. Lots of time, lots of possibilities.
exboyfil
(18,366 posts)implied by the statement that they found such planets. In general the older the planet the less likely to have higher concentrations of heavier elements.
Given how early bacteria showed up on Earth, I got to think that type of self replicating chemistry is ubiquitous in the universe. On the other hand are we sure the cocktail of elements we have an earth as prevalent on other planets. One observation seems to indicate that phosphorus may be rare.
https://dailygalaxy.com/2018/04/luck-of-the-draw-life-may-be-rare-in-the-milky-way-phosphorus-may-be-the-missing-link-between-geology-and-biology-resea/
DonaldsRump
(7,715 posts)bronxiteforever
(11,212 posts)Tears in my eye for this wonderful epic space mission.
sarge43
(29,173 posts)You sent us treasure. Rest in peace.
3Hotdogs
(15,482 posts)--- probably watching I Love Lucy re-runs right now.
Codeine
(25,586 posts)He has some splaining to do!
Wednesdays
(22,974 posts)They're watching I Love Lucy live.
3Hotdogs
(15,482 posts)maybe Lenny Bruce.
turbinetree
(27,654 posts)To make such discoveries, Kepler relied on three spinning "reaction wheels," with a fourth available as a spare, to keep the spacecraft rock-steady during its science observations. Small rocket thrusters were used to counteract the slight pressure exerted on the spacecraft by sunlight.
On July 14, 2012, one of the reaction wheels failed, leaving the spacecraft without a backup. Then on May 11, 2013, a second wheel malfunctioned. Engineers tried to find a workaround, but they were not successful.
The community then came up with a novel plan to use two wheels and light pressure to achieve the pointing accuracy and steadiness required. Science operations resumed in 2014, kicking off an extended mission known as K2.
I love Science.....................the trailing satellite was 371 days instead of 365 days................
Keplers Law........................
Kepler's three laws of planetary motion can be described as follows: The path of the planets about the sun is elliptical in shape, with the center of the sun being located at one focus. ... An imaginary line drawn from the center of the sun to the center of the planet will sweep out equal areas in equal intervals of time.
JudyM
(29,785 posts)This post is a dupe of https://www.democraticunderground.com/10142190427
Please continue the discussion in that thread.
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