Is it true scientists believe the universe is even older than they thought?
Yes. What's called the Planck spacecraft (named after the famous physicist Max Planck; generations of physics students studied and used what's called Planck's constant in quantum mechanics) measured radiation from deep space. That data yielded an age of 13.8 billion years...100 million years older than expected. And it found more 'normal' matter than expected. Can't we all use more 'normalcy'???