Planet Earth

This might sound insane and perverse, but I think this song could (also, alternatively) be about sexual intercourse/pregnancy/birth control (one or all of them). I'm not trolling.

"Only came outside to watch the nightfall with the rain"--This is the most Freudian of all lines in the song. "Came outside" is the crudest form of contraception that doesn't involve bloodletting...it's pulling out. The "rain" could be the spilling of one's seed and the "nightfall" could be the fact that the interaction could be happening at night or just in the dark.

"Making patterns rhyme" could be the rhythm of bodies in lovemaking.

"You'll see I'm right some other time" could be the speaker's conviction that it's best for both him and his partner not to conceive at this time in their lives.

"There's no sign of life"--There's no conception, no new life to be born from the mother.

"Another sound"--Ultrasound. Enough said.

"This is Planet Earth"--This is the way "adult" humans act in the real world: they make love, then move on.

"My head is stuck on something precious"--His "head" (manhood) is probing the partner's virginity.

"If you're coming down to land"--Is the partner going to climax?

"Is there anybody out there trying to get through"--Is his partner with child; does she have "someone to come through" the birth canal in time?

"My eyes so cloudy I can't see you"--A male's sexual organ has an eye (opening); the discharge is cloudy. Not sure what the "seeing" is, but it might simply be that the speaker does not know if his partner has conceived.

Good songs are written for a variety of interpretations; there may well be more than one meaning one takes. I like the nuclear apocalypse and outer space ideas mentioned also here. I think on the whole, though, that this song's lyrics have some sexual overtones that cannot be ignored.