Meteoro brilas en la atmosfero.

Brilas comes from the verb brili, meaning to shine or to glow.

The ending -as is the Esperanto present-tense ending, so:

• brili = to shine
• brilas = shines / is shining

So Meteoro brilas means A meteor shines or A meteor is shining.

The -n ending marks the direct object in Esperanto.

In this sentence:

• Meteoro is the subject: it is the thing doing the action.
• brilas is the verb.
• en la atmosfero is a prepositional phrase meaning in the atmosphere.

Because neither meteoro nor atmosfero is a direct object here, neither one takes -n.

So:

• Meteoro = subject
• en la atmosfero = location, introduced by the preposition en

La is the definite article, meaning the.

So:

• en atmosfero = in an atmosphere
• en la atmosfero = in the atmosphere

Esperanto uses la when the noun is definite or understood as a specific thing. In this sentence, the atmosphere is treated as a specific atmosphere, not just any atmosphere.

Esperanto has no indefinite article. There is no separate word for a or an.

So:

• meteoro can mean a meteor or simply meteor, depending on context.
• la meteoro would mean the meteor.

This is very normal in Esperanto. If a noun has no la, it is usually indefinite or general.

En is a preposition meaning in.

It introduces a location or position inside something:

• en la domo = in the house
• en la urbo = in the city
• en la atmosfero = in the atmosphere

Prepositions in Esperanto are followed by a noun or noun phrase, and that noun usually does not take -n unless there is some special reason, such as indicating direction in certain expressions.

In Esperanto, nouns end in -o.

So:

• meteoro = meteor
• atmosfero = atmosphere

This is one of the most regular features of Esperanto grammar. If you see a word ending in -o, it is very often a noun.

Related endings:

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb

The given order is the most neutral and natural one:

• Meteoro = subject
• brilas = verb
• en la atmosfero = place

But Esperanto word order is fairly flexible because endings make the grammar clear. For example, you could also say:

• En la atmosfero brilas meteoro.

This might sound more literary or put more emphasis on the location. Still, the original sentence is the simplest and best for everyday neutral style.

A rough English-friendly pronunciation is:

meh-teh-O-ro BREE-las en la at-mos-FEH-ro

A few helpful points:

• Stress in Esperanto almost always falls on the second-to-last syllable.
• So:
  • meteoro → me-te-O-ro
  • brilas → BRI-las
  • atmosfero → at-mos-FE-ro

Also, Esperanto pronunciation is very regular: words are generally pronounced as written.

In normal usage, brili means to shine, to glow, or to be bright/luminous.

So in this sentence, Meteoro brilas en la atmosfero gives the idea that the meteor is visibly shining in the atmosphere. It does not force a very technical distinction between producing light and appearing bright. It simply describes the visible brightness.

If a context needed more scientific precision, Esperanto could use more specific wording, but brilas is perfectly natural here.

Yes. Meteoro is a close cognate of English meteor.

Many Esperanto words are similar to international vocabulary, especially scientific or learned words. Here:

• English: meteor
• Esperanto: meteoro

The extra -o appears because Esperanto nouns normally end in -o.

Without la, meteoro is normally understood as a meteor, not the meteor.

So the most natural translation is:

• A meteor shines in the atmosphere
• or A meteor is shining in the atmosphere

If you want to say the meteor, Esperanto would usually say:

• La meteoro brilas en la atmosfero.

So yes, context can sometimes blur things a little, but grammatically the version without la is usually indefinite.