Cleaner than Earth('s) actually.


Senior Member
Hello, I'm watching the futuristic movie called 'Prometheus' and I've come across this dialogue. They've just arrived at a new planet and trying to enter into its depths they find something intriguing.

- There's something generating an atmosphere.
- Cleaner than Earth actually.

Here's the problem. I think the correct answer should be: "Cleaner than Earth's actually." because they're talking about the Earth's atmosphere, not the planet itself. But, in the other hand, I think this type of construction is very common, am I right? Maybe informal?

So, with or without 's? Thanks!
  • PaulQ

    English - England
    It is ellipsis. Cleaner than Earth actually. = Cleaner than the atmosphere on Earth actually.
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