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  • Macmillan: Series: Discover Science
  • Science - Official Site



"We were very surprised to find such a low-mass object so far from its parent star," said Dr Simon Murphy from the Australian National University (ANU).

Once team members discovered they were a similar distance from the Earth - about 100 light-years - they compared the motion of the two through space and realised they were moving together.

"We can speculate they formed 10 million to 45 million years ago from a filament of gas that pushed them together in the same direction," Dr Murphy explained.

Truly an outstanding course by an incredibly gifted Planetary Scientist and teacher. The course was thorough, demanding and comprehensive. Additionally, some of the course information conveys the latest scientific thinking, more up to date than some of the latest textbooks on Planetary Science.

Excellent Course! Very informative and gives a brief overview of the history of the Solar System and some of the questions driving new and current missions. Thank you.

The strength of Science and its online journal sites rests with the strengths of its community of authors, who provide cutting-edge research, incisive scientific commentary, and insights on what’s important to the scientific world. To learn more about how to get published in any of our journals, visit our guide for contributors , or visit the how-to page for each individual journal.

Science | Science Advances | Science Immunology | Science Robotics | Science Signaling | Science Translational Medicine

Discovery is an ongoing program that offers the scientific community the opportunity to assemble a team and design exciting, focused investigations that complement NASA's larger planetary science explorations. The goal is to achieve outstanding results launching many smaller missions using fewer resources and shorter development times than past projects with comparable objectives. The main objective is to enhance our understanding of the Solar System by exploring the planets, their moons, and small bodies such as comets and asteroids.

The 2006 NASA Strategic Plan identifies the following goal for Planetary Science : "Advance scientific knowledge of the origin and history of the solar system, the potential for life elsewhere, and the hazards and resources present as humans explore space." NASA's Science Mission Directorate (SMD) has responsibility for defining, planning and overseeing NASA's space and Earth science programs.

The Solar System Exploration Roadmap, published by NASA in September 2006, is drawn as a 30-year planning horizon, against the backdrop of the Presidential Initiative, "The Vision for Space Exploration." It excludes the Moon and Mars, which are covered in other Roadmaps. The scientific foundation of the Roadmap is a set of fundamental questions based on five objectives adopted in 2003 by NASA's then Office of Space Science, in response to the National Research Council's Decadal Survey, but modified to reflect the context of the exploration goals of the Vision for Space Exploration:

The discovery, reported Wednesday in the journal Nature, represents the first time astronomers have detected so many terrestrial planets orbiting a single star. Researchers say the system is an ideal laboratory for studying distant worlds and could be the best place in the galaxy to search for life beyond Earth.

“Before this, if you wanted to study terrestrial planets, we had only four of them and they were all in our solar system,” said lead author Michaël Gillon , an exoplanet researcher at the University of Liege in Belgium. “Now we have seven Earth-sized planets to expand our understanding. Yes, we have the possibility to find water and life. But even if we don't, whatever we find will be super-interesting.” 

The newly discovered solar system resembles a scaled-down version of our own. The star at its center, an ultra-cool dwarf called TRAPPIST-1 , is less than a tenth the size of our sun and about a quarter as warm. Its planets circle tightly around it; the closest takes just a day and a half to complete an orbit and the most distant takes about 20 days.

"We were very surprised to find such a low-mass object so far from its parent star," said Dr Simon Murphy from the Australian National University (ANU).

Once team members discovered they were a similar distance from the Earth - about 100 light-years - they compared the motion of the two through space and realised they were moving together.

"We can speculate they formed 10 million to 45 million years ago from a filament of gas that pushed them together in the same direction," Dr Murphy explained.

Truly an outstanding course by an incredibly gifted Planetary Scientist and teacher. The course was thorough, demanding and comprehensive. Additionally, some of the course information conveys the latest scientific thinking, more up to date than some of the latest textbooks on Planetary Science.

Excellent Course! Very informative and gives a brief overview of the history of the Solar System and some of the questions driving new and current missions. Thank you.

"We were very surprised to find such a low-mass object so far from its parent star," said Dr Simon Murphy from the Australian National University (ANU).

Once team members discovered they were a similar distance from the Earth - about 100 light-years - they compared the motion of the two through space and realised they were moving together.

"We can speculate they formed 10 million to 45 million years ago from a filament of gas that pushed them together in the same direction," Dr Murphy explained.

Truly an outstanding course by an incredibly gifted Planetary Scientist and teacher. The course was thorough, demanding and comprehensive. Additionally, some of the course information conveys the latest scientific thinking, more up to date than some of the latest textbooks on Planetary Science.

Excellent Course! Very informative and gives a brief overview of the history of the Solar System and some of the questions driving new and current missions. Thank you.

The strength of Science and its online journal sites rests with the strengths of its community of authors, who provide cutting-edge research, incisive scientific commentary, and insights on what’s important to the scientific world. To learn more about how to get published in any of our journals, visit our guide for contributors , or visit the how-to page for each individual journal.

Science | Science Advances | Science Immunology | Science Robotics | Science Signaling | Science Translational Medicine

"We were very surprised to find such a low-mass object so far from its parent star," said Dr Simon Murphy from the Australian National University (ANU).

Once team members discovered they were a similar distance from the Earth - about 100 light-years - they compared the motion of the two through space and realised they were moving together.

"We can speculate they formed 10 million to 45 million years ago from a filament of gas that pushed them together in the same direction," Dr Murphy explained.

Truly an outstanding course by an incredibly gifted Planetary Scientist and teacher. The course was thorough, demanding and comprehensive. Additionally, some of the course information conveys the latest scientific thinking, more up to date than some of the latest textbooks on Planetary Science.

Excellent Course! Very informative and gives a brief overview of the history of the Solar System and some of the questions driving new and current missions. Thank you.

The strength of Science and its online journal sites rests with the strengths of its community of authors, who provide cutting-edge research, incisive scientific commentary, and insights on what’s important to the scientific world. To learn more about how to get published in any of our journals, visit our guide for contributors , or visit the how-to page for each individual journal.

Science | Science Advances | Science Immunology | Science Robotics | Science Signaling | Science Translational Medicine

Discovery is an ongoing program that offers the scientific community the opportunity to assemble a team and design exciting, focused investigations that complement NASA's larger planetary science explorations. The goal is to achieve outstanding results launching many smaller missions using fewer resources and shorter development times than past projects with comparable objectives. The main objective is to enhance our understanding of the Solar System by exploring the planets, their moons, and small bodies such as comets and asteroids.

The 2006 NASA Strategic Plan identifies the following goal for Planetary Science : "Advance scientific knowledge of the origin and history of the solar system, the potential for life elsewhere, and the hazards and resources present as humans explore space." NASA's Science Mission Directorate (SMD) has responsibility for defining, planning and overseeing NASA's space and Earth science programs.

The Solar System Exploration Roadmap, published by NASA in September 2006, is drawn as a 30-year planning horizon, against the backdrop of the Presidential Initiative, "The Vision for Space Exploration." It excludes the Moon and Mars, which are covered in other Roadmaps. The scientific foundation of the Roadmap is a set of fundamental questions based on five objectives adopted in 2003 by NASA's then Office of Space Science, in response to the National Research Council's Decadal Survey, but modified to reflect the context of the exploration goals of the Vision for Space Exploration:

"We were very surprised to find such a low-mass object so far from its parent star," said Dr Simon Murphy from the Australian National University (ANU).

Once team members discovered they were a similar distance from the Earth - about 100 light-years - they compared the motion of the two through space and realised they were moving together.

"We can speculate they formed 10 million to 45 million years ago from a filament of gas that pushed them together in the same direction," Dr Murphy explained.



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