Hay contaminación lumínica, de manera que no vemos galaxias.

Hay means there is / there are. It comes from the verb haber and is used to say that something exists.

So:

• Hay contaminación lumínica = There is light pollution

Spanish uses hay for both singular and plural:

• Hay un problema = There is a problem
• Hay problemas = There are problems

You do not use está here, because está usually tells you where something is or what state it is in, not that it exists.

In Spanish, uncountable or general nouns often appear without an article, especially when you are talking about them in a broad sense.

So:

• Hay contaminación lumínica = there is light pollution / light pollution exists

This is similar to English, where we usually say there is pollution, not there is a pollution.

You could sometimes use an article in other contexts, but here the zero article is the normal choice.

In Spanish, adjectives usually come after the noun.

So:

• contaminación = pollution
• lumínica = light-related

Together:

• contaminación lumínica = light pollution

This noun + adjective order is the most normal pattern in Spanish.

Lumínica is an adjective related to light. It comes from luz and is used in more technical or formal language.

So contaminación lumínica is the standard term for light pollution.

A learner might expect something more literal like contaminación de luz, but contaminación lumínica is the usual fixed expression.

Here de manera que means so, so that, or therefore.

It introduces the result of the first clause:

• Hay contaminación lumínica, de manera que no vemos galaxias.
  There is light pollution, so we do not see galaxies.

It is a slightly more formal or written-sounding connector than así que.

Comparable expressions are:

• así que = so
• por eso = that’s why / for that reason
• de modo que = so / thus
• de manera que = so / in such a way that / therefore

In this sentence, it clearly means as a result.

Because de manera que is linking two clauses, and in this kind of sentence Spanish normally uses a comma before it.

The structure is:

• clause 1: Hay contaminación lumínica
• connector: de manera que
• clause 2: no vemos galaxias

So the comma helps separate the cause from the result.

Because ver means to see, while mirar means to look at.

Here the idea is not that we are actively looking at galaxies, but that we cannot see them / do not see them.

So:

• ver = to see
• mirar = to look (at)

That makes no vemos galaxias the correct choice.

Spanish often uses the simple present where English might naturally use can/can’t.

So:

• no vemos galaxias literally = we don’t see galaxies
• but in context it can also imply we can’t see galaxies

The sentence is expressing the practical result of light pollution. Spanish does not need podemos here, although no podemos ver galaxias would also be possible if you wanted to make the idea of inability more explicit.

Because Spanish usually omits subject pronouns when the verb ending already shows who the subject is.

• vemos = we see

The ending -emos tells you it is nosotros.

So:

• No vemos galaxias = We do not see galaxies

Adding nosotros is possible, but it is usually only done for emphasis or contrast:

• Nosotros no vemos galaxias, pero ellos sí.
  We don’t see galaxies, but they do.

The present tense is used here to state a general fact or current situation.

• Hay contaminación lumínica = there is light pollution
• no vemos galaxias = we do not see galaxies

This is not necessarily about one specific moment; it is a general consequence. Spanish uses the present tense very naturally for this kind of statement.

When Spanish talks about plural nouns in a general sense, it often leaves out the article.

So:

• no vemos galaxias = we do not see galaxies

This is general, not about specific galaxies.

Compare:

• No vemos galaxias = We do not see galaxies (in general)
• No vemos las galaxias = We do not see the galaxies (specific ones)

So the version without las is the right one here.

Yes. Depending on context, de manera que can sometimes mean:

• so / therefore (result)
• in such a way that (manner)

In this sentence, it means result:

• There is light pollution, so we do not see galaxies.

If it meant manner, the sentence structure and meaning would be different. Here the cause-and-result reading is the natural one.

In Spanish, the basic negative structure puts no directly before the verb.

So:

• vemos = we see
• no vemos = we do not see

This is the normal word order in Spanish negatives.

The verbs are:

• hay → infinitive: haber
• vemos → infinitive: ver

A useful detail:

• hay is a special impersonal form of haber
• vemos is the nosotros form of ver in the present tense

They have accents because Spanish spelling rules require them to mark the stressed syllable.

• contaminación → stress on the final -ción
• lumínica → stress on mí

These written accents are important: they show correct pronunciation and are part of the correct spelling.

It is perfectly correct and natural, but it sounds a bit more formal or written than some other options.

In everyday speech in Spain, people might more often say:

• Hay contaminación lumínica, así que no vemos galaxias.
• Hay contaminación lumínica, por eso no vemos galaxias.

But de manera que is still fully normal and understandable.