A competing theory proposes the existence of a hidden Kuiper Belt planet that’s smaller, with a mass between 1.5 and 3 times that of our world. Caltech/R. Hur The push for more evidence ...

There were estimates that the amount of material in the Kuiper belt is 2% of the mass of the Earth but that it started it at 10 times the mass of the Earth. However, there was a computational analysis ...

Since the first member of the Kuiper belt was discovered 1 in 1992, many unexpected features of their orbits and physical properties have been uncovered. One surprise was the very low total mass ...

Altjira now stands as the second known triple system of this kind in the Kuiper Belt. The first, called (47171) Lempo, also has three similar-mass bodies. That discovery shocked scientists.

The Kuiper Belt is a region in space beyond the orbit of Neptune that's home to Pluto and most of the known dwarf planets, as well as some comets that are thought to be relics of the solar system ...

Pluto and its moon Charon possibly “kissed” billions of years ago, a new report shows. Elenarts – stock.adobe.com. The authors suggest that Pluto and Charon, located in the Kuiper Belt at ...

Because the Kuiper Belt was thought to end at a distance of about 48 AU, the Solar System used to seem small compared to exosolar systems, where there are still objects floating around 150 AU from ...

For decades it was thought that water was prevalent in the outer reaches of the Solar System early in its history, with comets and asteroids delivering moisture to Earth and the inner planets during ...

Amazon's next group of Kuiper satellites could soon reach orbit, propelling the company closer to providing internet to ...

Super-Pluto? Competing Kuiper Belt theories A study published in August 2023 proposes the existence of a hidden planet that’s actually much smaller, with a mass between 1.5 and 3 times that of ...