In the song he mentions a couple of CONSTELLATIONS, which are groups of stars that make a design. The most important ones are the 12 constellations that the sun crosses along the year and some people think they have an influence on us. They are called THE ZODIAC; they all have Latin names and are: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, Capricorn, Aquarius, and Pisces.

He also mentions a couple of planets. The name of the planets are Roman gods (except our planet, the Earth): Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.

And he also mentions a few other celestial objects: galaxies (and specifically The Milky Way), a nebula, stars, a shooting star.

WON'T YOU LIKE...?= Do you want to...?
To make an invitation we can say "will you...?" or "won't you...?". We can also say "Would you...?" or, less common, "wouldn't you...?". WOULD for invitations is more polite than WILL or WON'T. The subtitles on the video transcribe "would you" but it's not correct, the song says "won't you".
- Will you come to my party tomorrow? (= do you want to come to my party? = Please, come to my party)
- Won't you like some more tea? (= Please, have some more tea if you want)
- Would you like a coffee? (= Do you want a coffee?)

TELESCOPE= A device to look at the stars (see picture).

THE MILKY WAY= (a literal translation of the original Latin name 'Via Lactea') A concentration of stars that can be seen lighting a path across the sky (which is actually an arm of our own spiral galaxy). (See picture)

A FINE SIGHT TO SEE= A nice view; something that looks very nice.
SIGHT= What you can see.

WE TRY SO HARD= We make a very big effort to do it.

TAKE A SPIN= (coll.) Go for a ride; travel around there.

NEBULA= A concentration of stardust in space. (see picture)

GOES ON= Continues, expands.
Tonight goes on so far in stars= Tonight the sky looks like an infinite space full of stars and more stars, never ending.

SAVED BY A BELL= (expression) saved by the timely intervention of someone or something at the last minute, just before it was too late. (This expression comes from boxing, where a bell marks the end of a round. When a boxer is knocked down, the referee counts down and if he gets to 0 and the boxer does not stand up, he loses (then we say that he was Knocked Out, or K.O. for short), but if the bell rings before the end of the countdown, then he is "saved by the bell" and he can rest for a while before going back to the fight)


SUFFERING HELL= Suffering a lot, having a really bad time.

TOO BLIND TO TELL= This sentence may have a literal meaning (you didn't say anything because you were too blind) or another meaning where TELL=REALIZE, "tell the difference" (you were too blind to know the truth). The second meaning makes more sense.

YOU MADE IT THROUGH= You survived a terrible situation or a big problem.

SHINING LIKE...= The normal order of this sentence would be: The galaxies are shining like bright diamonds.

SPIN BY= The verb SPIN is to rotate rapidly around an axis. The particle BY expresses the idea of "passing", as in "to walk by" (to pass walking: it comes here and then it continues and goes away in the opposite direction).

PASSING BY COMPANIONS= They are companions (they go together) and they "pass by" (see above for this use of "by").

DRIFTING BY= Something drifting is carried along by currents of air or water (like a leaf floating on a river). The particle BY expresses the idea of passing along (see "spin by" above).

A SHOOTING STAR= A meteorite (it looks like a star that suddenly appears in the sky, it quickly flies by drawing a line of light and then disappears).

FROM AFAR= From far away, from a remote place.