Christians who are scientists can answer that Q for you, first by pointing out that even cosmologists admit they barely know 1 per cent of what there is to know about the universe, and Christian cosmologists agree with that. However, although your comment about Christians is sarcasm, lets press on with a civil answer.
Renowned British physicist, Professor Brian Cox, has his documentary series on The Planets showing right now and I'm avidly following it. He admitted to the billions of dollars and pounds etc being spent on space missions, and a main reason is that scientists know our Earth is finite so that, one day, some humans will have to colonize other planets if the human race is to survive. That is what is at back of all the space missions that have been going on since the 1960s. Cosmologists are desperate to find - in time - a planet that can become a new home for a privileged few humans.
Christians do not have that worry, despite knowing that modern humanity is ruining our planet. They believe the promises of God that, one day, God will bring into existence "a new heavens and a new earth, in which righteousness will dwell." Knowing about God's righteousness is far more important than knowing material facts about a material universe but I know you could not care less about that, so let me just list below some books written by Scientists who are Christians, that would greatly enlighten your understanding, both about the universe and Christians.
Can Science Explain Everything? John C. Lennox (thegoodbook.com 2019)
What is Man? Adam, Alien or Ape? - Edgar Andrews (Elm Hill 2018)
Who Made God? Searching for a theory of everything, Edgar Andrews (EP 2014)
Inventing the Universe – Why we can’t stop talking about Science, Faith and God, Alister McGrath pp 56, 58 (Hodder & Stoughton 2015)
Faith & Wisdom in Science, Tom McLeish (Oxford 2014)
God, the Big Bang & Bunsen-burning issues, Ed. Nigel Bovey (Authentic Media 2008)