- The research has found that, rather than being unique, water-rich asteroids similar to those found in our Solar System appear to be frequent. Accordingly, many planets may have contained a volume of water, comparable to that contained in the Earth.
- In observations obtained in the Canary Islands, University of Warwick astronomers detected a large quantity of hydrogen and oxygen in the atmosphere of a white dwarf (known as SDSS J1242+5226). The quantities found provide the evidence that a water-rich exo-asteroid was disrupted and eventually delivered the water it contained onto the star.
- The impact of water-rich asteroids or comets onto a planet or white dwarf results in the mixing of hydrogen and oxygen into the atmosphere. There are many white dwarfs that hold large amounts of hydrogen and this new study suggests that this is evidence that water-rich asteroids or comets are common around other stars than the Sun.
New evidence supports the hypothesis that water arrived on Earth from an asteroid
5. 11. 15 by Greg Richards