What is the correct pronunciation of "Schiaparelli Crater" ?

The Martian Pronunciation

Schiaparelli is an impact crater on Mars named after Giovanni Schiaparelli located near Mars' equator. It is 461 kilometers (286 mi) in diameter and located at latitude 3° South and longitude 344°. A crater within Schiaparelli shows many layers that may have formed by the wind, volcanoes, or deposition under water.

Layers can be a few meters thick or tens of meters thick. Recent research on these layers suggests that ancient climate change on Mars caused by regular variation in the planet's tilt, may have caused the patterns in layers. On Earth, similar changes (astronomical forcing) of climate results in ice-age cycles.

The regular appearance of rock layers suggests that regular changes in climate may be the root cause. Regular changes in climate may be due to variations of a planet's tilt (called obliquity). The tilt of the Earth's axis changes by only a little more than 2 degrees since our moon is relatively large. In contrast Mars's tilt varies by tens of degrees. When the tilt is low (current situation on Mars), the poles are the coldest places on the planet, while the equator is the warmest (as on Earth). This could cause gases in the atmosphere, like water and carbon dioxide, to migrate poleward, where they would freeze. When the obliquity is higher, the poles receive more sunlight, causing those materials to migrate away. When carbon dioxide moves from the Martian poles, the atmospheric pressure increases, possibly causing a difference in the ability of winds to transport and deposit sand. Also, with more water in the atmosphere sand grains may stick and cement together to form layers.

Giovanni Virginio Schiaparelli

was an Italian.

Therefore

Djiovan-ni Virdjinio Skiaparelli

(with very little emphasis on that "i" after the sch)

the "i" sound in Italian is close to the English "ee" sound in "meek" or the "e" in the pronouns "he" and "she"

The double "L" near the end would cause the syllable "rel" to be made a tiny bit longer -- not necessarily an accented emphasis, but a tiny bit longer syllable.

The first syllable could be closer to ska (like in the movie)

than to ski-a (it there were two distinct syllables)

But it should be somewhere between the two (the "ee" sound should be there, even if ever so slightly).

The closest you will get to Italian is something like "skya-par-ELL-ee", with the "skya" as one short syllable - "ska" but just enough "ee-a" to take notice of the i. You really need to hear an Italian pronounce it but "sh" is definitely wrong.

TECHNICALLY, the "ch" is pronounced like a 'k', but that is highly Anglicized.

Pronouncing the word with the "SH sound is wrong, but is the accepted form when pronounced by the lazy American tongue.

Yes, it is also bru-sketta, not bru-shetta. Ska-par-ell-ee would work, though Wasif is completely correct. Italian pronounces all letters even if you can't tell, so a double ell is ell-lee, as was said.

If European you politely use the Italian sck sound. If any other area use the local. Brits say Paris not Paree.

This is up for discussion there are in fact more than one answers to this question..