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Spotlight

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

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

Government

Document

USA.gov

More…

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.

Giant planet at large distance from sun-like star...
on April 19, 2021 at 1:00 pm
A team of astronomers led by Dutch scientists has directly imaged a giant planet orbiting at a large distance around a sun-like star. Why this planet is so massive and how it got to be there is a mystery. The researchers will publish their findings in the journal Astronomy & Astrophysics.
Modelling ancient Antarctic ice sheets helps us...
on April 15, 2021 at 7:33 pm
Last month saw the average concentration of atmospheric carbon dioxide (CO2) climb to almost 418 parts-per-million, a level not seen on Earth for millions of years. In order to get a sense of what our future may hold, scientists have been looking to the deep past. Now, new research from the University of Massachusetts Amherst, which combines climate, ice sheet and vegetation model simulations with a suite of different climatic and geologic scenarios, opens the clearest window yet into the deep […]
Baked meteorites yield clues to planetary...
on April 15, 2021 at 3:00 pm
In a novel laboratory investigation of the initial atmospheres of Earth-like rocky planets, researchers at UC Santa Cruz heated pristine meteorite samples in a high-temperature furnace and analyzed the gases released.
With the right price path, there is no need for...
on April 15, 2021 at 12:28 pm
Technologies to remove CO2 from the atmosphere, such as reforestation or bioenergy with carbon capture and storage (BECCS), are an indispensable part of limiting climate change in most scenarios. However, excessive deployment of such technologies would carry risks such as land conflicts or enhanced water scarcity due to a high demand for bioenergy crops. To tackle this trade-off, a team of researchers from Potsdam and Berlin has now identified requirements for a dynamic, long-term carbon price […]
UPF presents its Planetary Wellbeing initiative...
on April 12, 2021 at 4:47 pm
In 2018, Pompeu Fabra University launched its Planetary Wellbeing initiative, a long-term institutional strategy spurred by the United Nations Sustainable Development Goals (SDG) and based on the Planetary Health project promoted by the Rockefeller Foundation and The Lancet.