(CNN) Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets.
And here's another article:
Report calls for changes in planetary protection policies - SpaceNews.com
WASHINGTON — An independent report is calling on NASA to update decades' old planetary protection policies to reflect changing knowledge of solar system habitability and to enable future exploration by both the space agency and commercial entities.
"At the time planetary protection was born at the beginning of the Space Age in the 1960s, we knew very little about the planets and their environments and their habitability; their suitability for astrobiology," said Alan Stern, a planetary scientist and former NASA associate administrator for science who chaired the 12-person board that included people from science and the space industry, during a call with reporters! This is the closest solar system to Earth containing ...fox43.com /2019/10/17/ ...containing...Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets. The Alpha...!! After decades of exploration of solar system bodies, he said, "we have a much more nuanced and, for that matter, sophisticated view of them."
Those recommendations include evaluating the technologies and techniques currently used to meet planetary protection requirements, allowing the use of "novel methods" to meet guidelines in a more feasible and cost-effective way. That is a particular concern for low-cost missions, which have sometimes struggled to meet requirements that are sometimes added late in mission development, the board found.
Newly Discovered Planet Challenges Astronomers' Notions Of How Planets Form : NPR
A team of scientists used a telescope at the Calar Alto Observatory in Spain to detect a gas giant orbiting a tiny red star some 30 light-years from Earth. Baback Tafreshi/Science Source/Getty Images hide caption
An oddball solar system discovered not too far from our own is forcing astronomers to reexamine their ideas about how planets get created.
In the journal Science, researchers report they detected a small, dim red dwarf star, about 30 light-years from Earth, being tugged by the gravity of what must be a huge, Jupiter-like planet.
"It's a very large planet, for such a small star," says Juan Carlos Morales , an astrophysicist at the Institute of Space Studies of Catalonia in Barcelona who was part of the research team.
It's so big, he says, that its existence can't be explained by the conventional wisdom about how solar systems develop.
NASA must rework planetary protection plans, panel advises | Science | AAAS
Planetary protection, as such efforts are known, remains a worthy goal, the report emphasizes. But many of the ways it is implemented, which date back to rules conceived at the beginning of the space age, have driven costly and sometimes questionable efforts, and do not make sense given current scientific knowledge, says Alan Stern, a planetary scientist from the Southwest Research Institute in Boulder, Colorado, who led the 12-member panel reviewing NASA's efforts. "We want to move from this 1960s–70s point of view that all of Mars was treated one way." Planetary surfaces are more nuanced than that, he says.
Concerns over planetary protection have often seen NASA make great efforts to prevent microbes from going to space! This is the closest solar system to Earth containing ...www.cnn.com ...system -scn/index.html This is the closest solar system to Earth containing multiple planets - CNN Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star . This makes it the...!! Its martian robots are assembled in cleanrooms, with many components baked in ovens or doused in chemicals! This is the closest solar system to Earth containing ...fox61.com/2019/10/16/ ...containing...This is the closest solar system to Earth containing multiple planets Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star .!! Famously, its Viking landers for Mars in the 1970s were baked in purpose-built ovens! This is the closest solar system to Earth containing ...system .html This makes it the closest solar system to Earth that contains multiple planets. The Alpha Centauri system is only 4.3 light years away but only contains one exoplanet, called Proxima B .!! But these protections have often been costly and, in the view of some scientists , overly burdensome.
In case you are keeping track:
'Waterfalls' of gas reveal baby planets - CNN
(CNN) Astronomers spied three spots around a star that could indicate baby planets are forming and growing there, according to a new study.
What moons in other solar systems reveal about planets like Neptune and Jupiter
Bradley Hansen does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
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What is the difference between a planet-satellite system as we have with the Earth and Moon, versus a binary planet – two planets orbiting each other in a cosmic do-si-do?
In 2018, two astronomers from Columbia University reported the first tentative observation of an exomoon – a satellite orbiting a planet that itself orbits another star. One curious feature was that this exomoon Kepler-1625b-i was much more massive than any moon found in our solar system! This is the closest solar system to Earth containing ...solar ...Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets. The Alpha Centauri system is only 4.3 light years away but only contains one exoplanet, called Proxima B .!! It has a mass similar to Neptune and orbits a planet similar in size to Jupiter.
Astronomers expect moons of planets like Jupiter and Saturn to have masses only a few percent of Earth. But this new exomoon was almost a thousand times larger than the corresponding bodies of our solar system – moons like Ganymede and Titan which orbit Jupiter and Saturn, respectively. It is very difficult to explain the formation of such a large satellite using current models of moon formation.
Just 11 light years from earth is a star system with two planets orbiting a red-dwarf star. This makes it the close… https://t.co/pgrlFCj8jJ CNN Fri Oct 18 06:31:02 +0000 2019
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