What's the Difference Between a Church, a Cathedral, and a Basilica?

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What is the difference between a church, a cathedral, and a basilica?

Mills Baker:

A church is a "house of worship," a building in which Christians gather to perform the rituals of their religion and interact with one another and hold religious functions and so on. They can be very plain, very simple.

A cathedral is a church which is also the "seat," in the bureaucratic sense more than the literal sense, of a bishop (or, in some denominations, another comparably high-ranking ecclesiastical figure). You therefore ordinarily see just one cathedral per denomination per city. Because bishops are responsible for an area—in Catholicism a diocese—a cathedral can also be thought of as the church associated with the administration of an area.

In common usage, people call really big churches cathedrals pretty often, but this is imprecise and technically mistaken.

A basilica was originally a Roman building featuring certain architectural elements that supported its use as a public, open facility for business, trading, etc. These typically—but not always—included colonnades, naves, and aisles, not unlike a modern pedestrian mall.

St. Peter's Basilica in Vatican City
St. Peter's Basilica in Vatican City
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When some churches were built with similar features in the time of early Christianity, they were called basilicas. Later, in Catholicism, the term acquired a new meaning: the pope designates some churches basilicas for a variety of reasons, and they become important sites:

The papal or major basilicas outrank in precedence all other churches. Other rankings put the cathedral (or co-cathedral) of a bishop ahead of all other churches in the same diocese, even if they have the title of minor basilica. If the cathedral is that of a suffragan diocese, it yields precedence to the cathedral of the metropolitan. The cathedral of a primate is considered to rank higher than that of other metropolitan(s) in his circonscription (usually a present or historical state). Other classifications of churches include collegiate churches, which may or may not also be minor basilicas.

So basilicas as Christian buildings are mainly a Catholic phenomenon. And indeed, the world's most famous basilica is of course St. Peter's in Rome, designed in part by Michelangelo, its plaza and baldacchino by Bernini, its balcony where crowds see their pope, etc.

This post originally appeared on Quora. Click here to view.

Are Any of the Scientific Instruments Left on the Moon By the Apollo Astronauts Still Functional?

Apollo 11 astronaut Neil Armstrong left the first footprint on the Moon on July 20, 1969.
Apollo 11 astronaut Neil Armstrong left the first footprint on the Moon on July 20, 1969.
Heritage Space/Heritage Images/Getty Images

C Stuart Hardwick:

The retroreflectors left as part of the Apollo Lunar Ranging Experiment are still fully functional, though their reflective efficiency has diminished over the years.

This deterioration is actually now delivering valuable data. The deterioration has multiple causes including micrometeorite impacts and dust deposition on the reflector surface, and chemical degradation of the mirror surface on the underside—among other things.

As technology has advanced, ground station sensitivity has been repeatedly upgraded faster than the reflectors have deteriorated. As a result, measurements have gotten better, not worse, and measurements of the degradation itself have, among other things, lent support to the idea that static electric charge gives the moon an ephemeral periodic near-surface pseudo-atmosphere of electrically levitating dust.

No other Apollo experiments on the moon remain functional. All the missions except the first included experiment packages powered by radiothermoelectric generators (RTGs), which operated until they were ordered to shut down on September 30, 1977. This was done to save money, but also because by then the RTGs could no longer power the transmitters or any instruments, and the control room used to maintain contact was needed for other purposes.

Because of fears that some problem might force Apollo 11 to abort back to orbit soon after landing, Apollo 11 deployed a simplified experiment package including a solar-powered seismometer which failed after 21 days.

This post originally appeared on Quora. Click here to view.

What Makes a Hotel Breakfast 'Continental'?

Hotels often offer a complimentary pastry and fruit breakfast.
Hotels often offer a complimentary pastry and fruit breakfast.
tashka2000/iStock via Getty Images

The continental breakfast, which is typically made up of pastries, fruit, and coffee, is often advertised by hotels as a free perk for guests. But why is it called continental, and why don’t patrons get some eggs and bacon along with it?

The term dates back to 19th century Britain, where residents referred to mainland Europe as “the continent.” Breakfast in this region was usually something light, whereas an English or American breakfast incorporated meat, beans, and other “heavy” menu options.

American hotels that wanted to appeal to European travelers began advertising “continental breakfasts” as a kind of flashing neon sign to indicate guests wouldn’t be limited to American breakfast fare that they found unappealing. The strategy was ideal for hotels, which saved money by offering some muffins, fruit, and coffee and calling it a day.

That affordability as well as convenience—pastries and fruit are shelf-stable, requiring no heat or refrigeration to maintain food safety—is a big reason continental breakfasts have endured. It’s also a carryover from the hybrid model of hotel pricing, where American hotels typically folded the cost of meals into one bill and European hotels billed for food separately. By offering a continental breakfast, guests got the best of both worlds. And while Americans were initially aghast at the lack of sausages and pancakes on offer, they’ve since come around to the appeal of a muffin and some orange juice to get their travel day started.

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