The Primordial Dust
Meteorites like Mezö-Madaras contain leftover samples
of the actual dust and grains that formed the rocky planets
4.6 billion years ago. Called chondrites, meteorites of this
type preserve direct evidence of the processes that shaped
our Solar System.
The roughly spherical grains in Mezö-Madaras and in other
chondrites are called chondrules. They are beautifully preserved,
preplanetary grains that once drifted in the Solar System.
Within the first few million years, the grains coalesced into
the meteorite's parent asteroid.
This image is 31mm across.