Learn Neptune

Learn Neptune

GeneralKnowledge
2021年08月30日
  • 5.2 MB

    文件大小

  • Android 4.1+

    Android OS

關於Learn Neptune

海王星電子書

Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the giant planets in the Solar System, Neptune is the most dense. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune.[c] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50×109 km). Named after the Roman god of the sea, its astronomical symbol is ♆, a stylised version of the god Neptune's trident.

Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to deduce that its orbit was subject to gravitational perturbation by an unknown planet. Neptune was subsequently observed with a telescope on 23 September 1846[1] by Johann Galle within a degree of the position predicted by Urbain Le Verrier. Its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining known 14 moons were located telescopically until the 20th century. The planet's distance from Earth gives it a very small apparent size, making it challenging to study with Earth-based telescopes. Neptune was visited by Voyager 2, when it flew by the planet on 25 August 1989.[10] The advent of Hubble Space Telescope and large ground-based telescopes with adaptive optics has recently allowed for additional detailed observations from afar.

更多

最新版本1.2的更新日誌

Last updated on 2021年08月30日
Minor bug fixes and improvements. Install or update to the newest version to check it out!
更多

視頻和屏幕截圖

  • Android 版預告片
  • Learn Neptune 截圖 1
  • Learn Neptune 截圖 2
  • Learn Neptune 截圖 3
  • Learn Neptune 截圖 4
  • Learn Neptune 截圖 5
  • Learn Neptune 截圖 6
  • Learn Neptune 截圖 7

Learn Neptune歷史版本

Learn Neptune 1.2

5.2 MB2021年08月30日
下載

Learn Neptune 1.1

4.0 MB2019年03月05日
下載

Learn Neptune 1.0

3.3 MB2016年09月07日
下載
APKPure 圖標

在APKPure極速安全下載應用程式

一鍵安裝安卓XAPK/APK文件!

下載 APKPure
thank icon
We use cookies and other technologies on this website to enhance your user experience.
By clicking any link on this page you are giving your consent to our Privacy Policy and Cookies Policy.
Learn More about Policies