How to Grow a Planet - Netflix
In this TV programme Professor Iain Stewart journeys from the spectacular caves of Vietnam to the remote deserts of Africa and sees how plants first harnessed light from the sun and created our life-giving atmosphere. He describes how the plant kingdom has transformed a lifeless planet into our living world.
Runtime: 60 minutes
How to Grow a Planet - Planet Nine - Netflix
Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravitational influence could explain a statistical anomaly in the distribution of orbits of a group of distant trans-Neptunian objects (TNOs) found mostly beyond the Kuiper belt in the scattered disc region. This undiscovered super-Earth-sized planet would have an estimated mass of ten Earths, a diameter two to four times that of Earth, and an elongated orbit lasting approximately 15,000 years. To date, efforts to detect Planet Nine have failed. Speculation about the possible existence of a ninth planet began in 2014. Astronomers Chad Trujillo and Scott S. Sheppard wrote in the journal Nature and compared the similar orbits of trans-Neptunian objects Sedna and 2012 VP113. In early 2016, Konstantin Batygin and Michael E. Brown described how the similar orbits of six TNOs could be explained by Planet Nine and proposed a possible orbit for the planet. This hypothesis could also explain TNOs with orbits perpendicular to the inner planets and those with an extreme tilt, as well as the tilt of the Sun's axis. Planet Nine is presumed to be the core of a primordial giant planet that was ejected from its original orbit, after encountering Jupiter, during the genesis of the Solar System. Others have proposed that the planet was either captured from another star, a captured rogue planet, or its orbit may have been influenced by a distant encounter with a passing star.
How to Grow a Planet - Naming - Netflix
Planet Nine does not have an official name and will not receive one unless its existence is confirmed, typically through optical imaging. Once confirmed, the International Astronomical Union will certify a name, with priority usually given to a name proposed by its discoverers. It is likely to be a name chosen from Roman or Greek mythology. In their original article, Batygin and Brown simply referred to the object as “perturber”, and only in later press releases did they use “Planet Nine”. They have also used the names “Jehoshaphat” and “George” for Planet Nine. Brown has stated: “We actually call it Phattie when we're just talking to each other.” Planetary scientist Alan Stern has objected to the name Planet Nine, saying “It is an effort to erase Clyde Tombaugh's legacy [discovery of Pluto] and it's frankly insulting.” suggesting the name Planet X until its discovery.
How to Grow a Planet - References - Netflix