United Airlines just made their boarding process faster. But an astrophysicist says there's still a quicker way.

• United Airlines introduced a new system for boarding passengers on October 26.
• It claims the new procedure will save two minutes of flight time.
• But Jason Steffen, an astrophysicist at the University of Nevada, says boarding could be even faster.

An astrophysicist said United Airlines' new airplane boarding system could be even faster.

United announced that from October 26 it was introducing a system known as WILMA, where economy passengers in window seats would board first, followed by middle seats, and then aisle seats, per a memo shared with Insider.

The airline said that the new method is two minutes faster than the old system and is more popular with customers.