chondrule

Work out how old the oldest chondrules are, and you know when the sun ignited.

Sometimes in weathered or broken meteorites, the chondrules may be exposed and evident on the surface.

That means they contain spherical nodules a few millimetres across, known as chondrules.

Achondrites: This name is given to meteorites which do not have chondrules and originate from different areas of the solar system.

Formation ages of Ca-Al-rich inclusions and chondrules may speculate the time-scale of evolution of the early solar nebula.

Most stone meteorites contain grain-like components known as chondrules.

Chondrules are spherical bodies formed early during the formation of the solar nebula.

The most common is the Ordinary Chondrite which will generally show small round features called "Chondrules" .

That chondrules formed in such quantities suggests that the heating which created them was widespread.

To reach back, you need to look in the dust grains in chondrites, rather than at the chondrules.

Murchison Meteorite showing small white chondrules and black matrix.

This meteorite basically has a black interior with very small white to grey coloured chondrules.

Looking at these isotopes allows the chondrules to be dated, and they were formed 4. 56 billion years ago.

Chondrules are frozen droplets of once-liquid rock.

Achondrites are were formed by igneous processes similar to those occurring on Earth today, and they lack chondrules.

Chondrules are not found in earth rocks.

Chondrites (containing chondrules) are the most common type of meteorite