21 January 2019
Is this the end for Planet Nine?
...Solar System, has been a lingering and tantalising idea ever since Neptune was discovered in 1846. Although it has never been found, ...of small objects constituting a disc beyond the orbit of Neptune and see what it does for us?" said Sefilian. ...
06 April 2020
Planets can form second atmospheres rich in CO, new study shows
...enough carbon dioxide (CO) could be accreted to give an exoplanet sub-Neptune-like atmospheric pressures. “We show the effect of gas accretion on ...not very massive, say the team. For sub-Neptunes or more massive planets that already have substantial ...
February 2016
Is Jupiter Really Our Protective Shield?
... nearly 49,000 interactions with objects whose aphelion was beyond Neptune. Of those, only seven impacted Jupiter, five per ... their core masses - to the approximate size of Uranus and Neptune - then the flux of material through the inner Solar System ...
January 2020
Small body missions unveil interplanetary secrets
... 20 to 200 times as massive as the asteroid belt. The inner edge of the Kuiper Belt begins at the orbit of Neptune, at about 30 AU from the Sun. Similar to the relationship between the main asteroid belt and Jupiter, it’s a region...
01 June 2018
Largest discovery of trans-Neptunian objects released
...discovered 838 Solar System objects out beyond the orbit of Neptune with such high precision, that there whereabouts will always... in the Kuiper belt were ‘scattered’ by the gravity of Neptune or the other outer planets. Eris, which is the second-...
20 August 2018
Galaxy should be teeming with water-worlds say researchers
... of this can be seen in our own Solar System; Uranus and Neptune for example have a radius around four times that of Earth, whereas... cores of our own neighbours (Jupiter, Saturn, Uranus and Neptune). Its not all good news for planets between four and ...
