Planetary System

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Spotlight

Exoplanet Travel Bureau (NASA)

This 360° panorama depicts the surface of a newly detected planet, TRAPPIST-1d, part of a seven planet system some 40 light years away. You can explore this artist’s rendering of an alien world by moving the view using your mouse or your mobile device. The depiction is based on the latest scientific data about this planetary system, and this world’s sister planets can be seen as bright points of light in a dark sky. Each world is roughly in Earth’s size range, in terms of both mass and diameter. Further observations will be needed to determine whether any or all of these worlds might be habitable. — YouTube 360 Video Information, NASA Jet Propulsion Laboratory

Related

Pages

Physical Realm
Universe Astronomical Instrument
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

Resources

These are organized by a classification scheme developed exclusively for Cosma. More…

General

Portal

Beyond Our Solar System (NASA)
Planets & Planetary Systems Internet Resources (Library of Congress)
Extrasolar Systems Internet Resources (Library of Congress)

Encyclopedia

Planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. The Sun together with its planetary system, which includes Earth, is known as the Solar System. The term exoplanetary system is sometimes used in reference to other planetary systems.

As of 1 August 2018, there are 3,815 confirmed planets in 2,853 systems, with 633 systems having more than one planet. Debris disks are also known to be common, though other objects are more difficult to observe.

Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water, and thus the capacity to harbor Earth-like life. — Wikipedia

Introduction

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

Participation

Education

Planetary Systems (Cosmos4Kids)

Community

Organization

The Planetary Society

News

Exoplanet News (NASA), Science News, Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • New model can predict carbon cycle presence on...
    on May 3, 2021 at 6:10 am

    Life thrives at stable temperatures. On Earth, this is facilitated by the carbon cycle. Scientists at SRON, VU and RUG have now developed a model that predicts whether there is a carbon cycle present on exoplanets, provided the mass, core size and amount of CO2 are known. Publication in Astronomy & Astrophysics on May 3.

  • Hubble watches how a giant planet grows
    on April 29, 2021 at 4:37 pm

    Ever made a complete mess in your kitchen while baking? At moments it may look like flour is floating in the air, but once you've added plenty of water and formed your dough, the bread becomes more like a ball. A similar process is at work in a far-flung solar system known as PDS 70, except the flour and water are swapped for gas and dust. In the case of planet PDS 70b, gas and dust are slowly being drawn in as this distant world builds mass over millions of years.

  • Meteorites reveal magnetic record of protoplanet...
    on April 29, 2021 at 2:34 pm

    If you stumble upon an unusual rock that could be a meteorite, do not place a magnet on it to see if it's magnetic—you'd end up erasing 4.5 billion years of magnetic history. Meteorites are remnants of our solar system's first protoplanets and, in some cases, retain a record of the magnetic fields they've experienced in the distant past.

  • Engineering professor solves deep earthquake...
    on April 28, 2021 at 8:30 pm

    These mysterious earthquakes originate between 400 and 700 kilometers below the surface of the Earth and have been recorded with magnitudes up to 8.3 on the Richter scale.

  • Astronomers detect new chemical signature in an...
    on April 27, 2021 at 2:13 pm

    An international collaboration of astronomers led by a researcher from the Astrobiology Center and Queen's University Belfast has detected a new chemical signature in the atmosphere of an extrasolar planet—i.e., a planet that orbits a star other than our sun. The hydroxyl radical (OH) was found on the dayside of the exoplanet WASP-33b. This planet is a so-called 'ultra-hot Jupiter," a gas-giant planet orbiting its host star much closer than Mercury orbits the sun (Figure 1) and therefore […]