The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

of diurnal temperature
variations in the ATMOSPHERE.
The Big Bang Theory Season 7, Episode 17

You think this planet you're looking for
has an ATMOSPHERE that supports life?
The Big Bang Theory Season 4, Episode 9

there’s some tension in the ATMOSPHERE?
Money Heist Season 1, Episode 12

Really, 10 miles?
You're orbiting inside the ATMOSPHERE?
The Big Bang Theory Season 4, Episode 24