File:PIA22095-TRAPPIST-1-SolarSystemComparison-20180205.jpg
Исходный файл (4800 × 2700 пкс, размер файла: 578 КБ, MIME-тип: image/jpeg)
Краткие подписи
Краткое описание[править]
ОписаниеPIA22095-TRAPPIST-1-SolarSystemComparison-20180205.jpg |
English: PIA22095: Comparing TRAPPIST-1 to the Solar System
https://photojournal.jpl.nasa.gov/catalog/PIA22095 This graph presents known properties of the seven TRAPPIST-1 exoplanets (labeled b through h), showing how they stack up to the inner rocky worlds in our own solar system. The horizontal axis shows the level of illumination that each planet receives from its host star. TRAPPIST-1 is a mere 9 percent the mass of our Sun, and its temperature is much cooler. But because the TRAPPIST-1 planets orbit so closely to their star, they receive comparable levels of light and heat to Earth and its neighboring planets. The vertical axis shows the densities of the planets. Density, calculated based on a planet's mass and volume, is the first important step in understanding a planet's composition. The plot shows that the TRAPPIST-1 planet densities range from being similar to Earth and Venus at the upper end, down to values comparable to Mars at the lower end. The relative sizes of the planets are indicated by the circles. The masses and densities of the TRAPPIST-1 planets were determined by careful measurements of slight variations in the timings of their orbits using extensive observations made by NASA's Spitzer and Kepler space telescopes, in combination with data from Hubble and a number of ground-based telescopes. These measurements are the most precise to date for any system of exoplanets. By comparing these measurements with theoretical models of how planets form and evolve, researchers have determined that they are all rocky in overall composition. Estimates suggest the lower-density planets could have large quantities of water -- as much as 5 percent by mass for TRAPPIST-1d. Earth, in comparison, has only about 0.02 percent of its mass in the form of water. NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech, also in Pasadena. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA. For additional information about the Spitzer mission, visit http://www.nasa.gov/spitzer and http://spitzer.caltech.edu. For additional information on the Kepler and the K2 mission, visit www.nasa.gov/Kepler. For additional information about exoplanets, visit https://exoplanets.nasa.gov/. |
Дата | |
Источник | https://photojournal.jpl.nasa.gov/jpeg/PIA22095.jpg |
Автор | NASA/JPL-Caltech |
Лицензирование[править]
Public domainPublic domainfalsefalse |
Этот файл находится в общественном достоянии (англ. public domain), так как он был создан NASA (Национальным управлением по аэронавтике и исследованию космического пространства). Политика авторского права NASA гласит, что «Материал NASA не защищается авторским правом, если не указано иное». (См. Template:PD-USGov, страницу политики авторского права NASA или политику использования изображений JPL.) | ||
Предупреждения:
|
История файла
Нажмите на дату/время, чтобы увидеть версию файла от того времени.
Дата/время | Миниатюра | Размеры | Участник | Примечание | |
---|---|---|---|---|---|
текущий | 16:53, 6 февраля 2018 | 4800 × 2700 (578 КБ) | Drbogdan (обсуждение | вклад) | User created page with UploadWizard |
Вы не можете перезаписать этот файл.
Использование файла
Нет страниц, использующих этот файл.
Глобальное использование файла
Данный файл используется в следующих вики:
- Использование в es.wikipedia.org
- Использование в gl.wikipedia.org
- Использование в ko.wikipedia.org
- Использование в ru.wikipedia.org
- Использование в vi.wikipedia.org