Explanation:

Blue Straggler Stars are unusually hot and bright stars found in the cores of ancient star clusters known as globulars.

• Most are located at least several thousand light-years away from the sun, and most are around 12 billion years old or more.
• Blue straggler stars appear to violate standard theories of stellar evolution.
• Under standard stellar evolution, a bunch of stars born at the same time from the same cloud form a star cluster.
• Star formation happens in interstellar molecular clouds: opaque clumps of very cold gas and dust.
• As time passes, each star evolves differently depending on its mass, in which all stars born at the same time should lie on a clearly defined curve in the Hertzsprung-Russell diagram.
• In the case of a blue straggler star, they evolve and move off the main sequence creating a bend in their track, known as the turnoff.
• Since blue stragglers often lie well off this curve, they may undergo abnormal stellar evolution.

Hence both statements are correct.