Craters on the moon that could have been formed by such a large collision have been dated to around 3.9bn years, soon after it formed from debris knocked off Earth by an even larger cosmic collision.
Within the uncertainties in the values of parameters describing the EKO structure and the heat release due to impacts, it was found that the outcome of even a large collision cannot be taken for granted: in some cases, the impacted body is altered to depths of more than 1 km, while in some other cases very small effects are produced.
But it's not the largest collision in Earth's history, not by a long shot.
A large collision in an older system is surprising, says astronomer Scott Kenyon of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
In 1994, the Galileo spacecraft found little 1.5-kilometer diameter Dactyl orbiting 56-kilometer Ida, and the most obvious explanation was a large collision.
A large collision could easily account for this, while an in situ formation scenario cannot, nor can a captured object scenario.
But you could, in principle, develop moons through three methods: initial formation from a protoplanetary disk, capturing another passing body through gravitational forces, or from the debris of a large collision.
All IEEE 802.11 interfaces are equipped with fixed 10 dB attenuators to enable both large collision domains (at 23-dBm transmit power) as multi-hop experimentation (at 3-dBm transmit power).
The moons of trans-Neptunian objects Pluto (Charon) and Orcus (Vanth) may also have formed by means of a large collision: the Pluto Charon, Orcus Vanth and Earth Moon systems are unusual in the Solar System in that the satellite's mass is at least 1% that of the larger body.
When a large collision energy is applied to the 4,4′-MDA parent ion, a loss of a hydrogen radical occurs, leading to alpha cleavage and formation of the 106 Da fragment.
