Sure, Captain Marvel has engaged in battles with Thanos in the comic book universe. Their clashes have been significant and have impacted the storylines.
There have been instances where Spider-Man and Captain Marvel have squared off in the comics. It usually depends on the circumstances and the overall narrative of the comic series.
Captain Marvel is Carol Danvers. She gained her powers through an interaction with alien technology and has become a powerful hero in the Marvel universe.
Captain Marvel would have the advantage in terms of raw power. His powers are on a cosmic level. However, Young Justice has the element of surprise and teamwork. They could use their different abilities in creative ways to outmaneuver Captain Marvel. For instance, Robin could come up with a clever strategy, and Aqualad could use his leadership skills to coordinate the team's attacks. But overall, Captain Marvel's individual power might tip the scales in his favor.
One idea could be a story where Captain America and Captain Marvel team up to face a new cosmic threat that's headed towards Earth. They have to combine their unique skills, with Captain America's strategic mind and combat experience on the ground, and Captain Marvel's incredible cosmic powers in space battles.
I don't think so. The concept of 'strongest' is relative in the Marvel universe. Different heroes have their unique powers and moments of greatness, so it's not a straightforward answer to say Captain Marvel is the strongest.
Yes, Captain Marvel is definitely a significant character in Marvel Comics. She has her own storylines and plays an important role in the Marvel universe.