In particular, howardite
and eucrite meteorites, which are common species found on Earth, have been used to study asteroid Vesta, their parent body.
Unfortunately the latter strayed into gratuitous socio-economic commentary, totally inappropriate on the day but necessary, we were told, to content his Howardite
rump in caucus.
In addition, samples of howardite
and diogenite meteorites were used for comparison.
The new findings solidly confirm the connection between Vesta and a class of meteorites found on Earth called the Howardite
, Eucrite and Diogenite meteorites, which have the same ratios for these elements.
This basin appears to have excavated into the mantle of Vesta, exposing material spectrally similar to diogenite meteorites; Vesta's crust is spectrally similar to eucrite and howardite
meteorites, thus confirming that Vesta and its family of asteroids are the source of the howardite-eucrite-diogenite (HED) family of basaltic achondrite meteorites.
Although Vesta and its family are located between Mars and Jupiter, smaller pieces of these asteroids can be found in meteorite collections on Earth, including most eucrite, howardite
and diogenite meteorites.
In addition there was the need to stop the Ebenezer Howardites
The three meteorite types -- the eucrites, howardites
and diogenites -- came from an asteroid big enough for its surface rock to melt, possibly from the heat of radioactive elements inside it, concludes a team headed by Dale P.
Scientists noticed that Vesta's infrared spectrum is remarkably similar to the spectra of a class of meteorites called the HEDs (Howardites
, Eucrites, and Diogenites), ancient samples of which apparently started out as volcanic rocks within the crust or mantle of a large terrestrial planet or protoplanet and that were later transported to Earth by impacts.
Vesta's spectra match those of a class of meteorites called the HEDs (for "Howardites
, Eucrites, and Diogenites").
The closest matches occur between a group of fine-grained igneous meteorites (called howardites
, eucrites, and diogenites, or collectively HEDs) and Vesta.