#planet system

[happy-little-elf]

First ever image of a multi-planet system around a Sun-like star that’s 300 light-years away system TYC 8998-760-1

(source)

[bloglifenews]

Some of the planets have been recognized to people for as long as they have been observing the stars. Mercury, Venus, Mars, Jupiter, and Saturn can all be seen with the bare eyes, so it’s impossible to say who was the first human to discover them, and when that was but we know who saw them first time from telescope!

Uranus- William Hershel

Willian Hershel

on March 13, 1781. He was searching the sky with his telescope and realized that Uranus was moving with respect to the stars. Other people had seen Uranus before even marked it on their star charts–but they didn’t realize that it wasn’t a star.

Neptune- Johann Galle and Heinrich Louis d’Arrest

Heinrich Louis d’Arrest

Johann Galle

Based on small perturbations in the orbit of Uranus, John Adams and Urbain Le Verrier predicted the position of another, more distant planet. Though John Adam’s prediction was first, by about a month, the observers Johann Galle and Heinrich Louis d’Arrest used LaVerrier’s position, and were the first people to observe the planet Neptune and know what they were looking at on September 18, 1846. Again, many people had seen Neptune before, including, surprisingly, Galileo Galilei, who noted a “star” in the field during his observations of Jupiter, which we now believe was actually Neptune.

Pluto- Clyde Tombaugh

Clyde Tombaugh

On February 18, 1930. He found it in a location predicted by apparent perturbations in the orbit of Neptune. However, we now know that Pluto is too small to cause a measurable change in Neptune’s orbit and that the “perturbations” were actually just errors in the measurement of the positions of the planets, so Tombaugh was just lucky.

Mercury- Not Known

Mercury

Mercury or quicksilver has been known since ancient times. We do not know who discovered it. Mercury was known to the ancient Chinese, Egyptians and Hindus and has been found in Egyptian tombs dating back to about 1500 B.C.

Venus- Galileo Galilei

Galileo Galilei

In 1610, the first person to point a telescope at Venus was Galileo Galilei. Even with his crude telescope, Galileo realized that Venus goes through phases like the Moon. These observations helped support the Copernican view that the planets orbited the Sun, and not the Earth as previously believed. Venus has an atmosphere and helped calculate the distance from the Earth to the Sun with great accuracy.

Mars – Not Known

Mars

The recorded history of observation of the planet Mars dates back to the era of the ancient Egyptian astronomers in the 2nd millennium BCE. Chinese records about the motions of Mars appeared before the founding of the Zhou Dynasty (1045 BCE). The first telescopic observation of Mars was by Galileo Galilei in 1610.

Jupiter- Not Known

Jupiter

Jupiter is the largest planet in the solar system. Fittingly, it was named after the king of the gods in Roman mythology. In a similar manner, the ancient Greeks named the planet after Zeus, the king of the Greek pantheon. Jupiter is the most massive planet in our solar system, more than twice as massive as all the other planets combined, and had it been about 80 times more massive, it would have actually become a star instead of a planet.

Saturn- Not Known

Saturn

Saturn has been known since prehistoric times because it is easily visible to the naked eye. Not until the invention of the telescope, however, did people observe Saturn’s magnificent rings.

Galileo Galilei was the first to observe Saturn with a telescope in 1610. Because of the crudeness of his telescope, he couldn’t determine what the rings were. He incorrectly guessed that there were two large moons on either side of Saturn. Two years later when he viewed Saturn again, the “moons” had disappeared. We know now this is because Galileo was viewing the rings edge-on so that they were invisible, but at the time it was very confusing to Galileo. After another two years, Galileo viewed Saturn again and found that the “moons” had returned. He concluded that the rings were “arms” of some sort.

However, most of the planets were first discovered via a telescope by Galileo Galilei.

  Who discovered each planet? Some of the planets have been recognized to people for as long as they have been observing the stars.

[petrowl]

planet system by b3rni (found on threadless)

[dragoni]

A Four Planet System in Orbit, Directly Imaged and Remarkable

This evocative movie of four planets more massive than Jupiter orbiting the young star HR 8799 is a composite of sorts, including images taken over seven years at the W.M. Keck observatory in Hawaii.

The movie clearly doesn’t show full orbits, which will take many more years to collect. The closest-in planet circles the star in around 40 years; the furthest takes more than 400 years.

The images were initially captured by a team of astronomers including Christian Marois of the National Research Council of Canada’s Herzberg Institute of Astrophysics, who analyzed the data.  The movie animation was put together by Wang, who is part of the Berkeley arm of the Nexus for Exoplanet System Science (NExSS), a NASA-sponsored group formed to encourage interdisciplinary exoplanet science.

HR 8799 is 129 light years away in the constellation of Pegasus.  By coincidence, it is quite close to the star 51 Pegasi, where the first exoplanet was detected in 1995.  It is less than 60 million years old, Wang said, and is almost five times brighter than the sun.

Although the first three HR 8799 planets were officially discovered in 2008,  researchers learned afterwards that the planets had actually already been observed.  The “precovery” had been made in 1998 by the NICMOS instrument on the Hubble Space Telescope, but was teased out only after a newly developed image-processing technique was installed.

The forth HR 8799 planet was found after further observations in 2009–2010.  That planet orbits inside the first three planets, but is still fifteen times the distance from its sun than Earth to our sun.  (The team working with Marois included Quinn Konopacky of the University of California, San Diego, Bruce Macintosh of Stanford University, Travis Barman of the University of Arizona and Ben Zuckerman of UCLA.)

[themomentyoudoubt]

[gamerasliindonesia-blog]

Star Citizen Tunjukan Video Planet System Mereka Hanya di http://toraheki.com/star-citizen-tunjukan-video-planet-systemyang-keren/ Toraheki

Check Info Gaming Indonesia Terbaru di http://toraheki.com/star-citizen-tunjukan-video-planet-systemyang-keren/

Star Citizen Tunjukan Video Planet System Mereka

Robert Tech kembali memberikan kita sebuah teaser dari game kickstarter mereka yaitu Star Citizen. Dan kali ini mereka memberikan sebuah video procedurally generated planet systems.

Video ini diambil 100% dari grafis in-game, jadi bukan merupakan sebuah CG saja, kalian bisa menikmati semua pemandangan ini di dalam game, ya ini salah satu yang membuat kami terkendalam memainkan versi Free Weekend kemarin dengan lancar.

Tonton aja videonya guys dan beri pendapat kalian disini!

[modernizor]

PLANET SYSTEM vintage lithography