Simplify the following text for a Grade 10 native English-speaking person.
Original: In 1957 he and his wife were co-authors , together with William Fowler , the American physicist , and Fred Hoyle , the British astronomer , of a famous paper on stellar nucleosynthesis , which was referred to as the B2FH paper , after the initials of the surnames of the four authors .
Simplified: In 1957 he and his wife , together with William Fowler , the American physicist , and Fred Hoyle , the British astronomer , wrote a 104-page paper about stellar nucleosynthesis . The paper became known as the B2FH ( because of their initials ) .