A 10-year-old boy who dreams of working for Nasa is "over the moon" after achieving a B grade in GCSE astronomy.
Monty Rix, from St Austell in Cornwall, is believed to be the youngest person to study the subject and sat the exam six years early.
He devoted two hours each week to learning about the stars while in Year Five at Pondhu Primary School.
Experts at the Roseland Observatory near St Stephen spent 10 months preparing Monty for his exam, which he took at Launceston College.
"I am over the moon," Monty said.
"It is absolutely brilliant.
"The exam hall was a bit scary but I just put my head down and got on with it.
"Astronomy is just so fascinating.
"There is always something new and exciting happening.
"Even this week, scientists in Chile saw a star being born 1,400 light years away."
Monty became interested in astronomy "as soon as he could stand" after being inspired by father Simon Rix, 42, who has a degree in Astronomy and Physics from UCL.
He started attending sessions at the Roseland Observatory and quickly became passionate about learning about the subject.
Liberal Democrat Cornwall councillor Mr Rix said: "Monty is so keen, he finds it very exciting and likes the intellectual challenge.
"The exam wasn't easy, it is hardly a dumbed down subject.
"He spent 10 months learning at the Roseland Observatory.
"If it was a clear night, he would go out and look at the stars and if it wasn't he would be inside learning from books.
"He loved going back to school and telling his teachers about what he had learned.
"He is the youngest person to get a GCSE in astronomy and is thrilled."
Monty lives with father Mr Rix, mother Eileen Rix, 44, who works at the Eden Project, and younger sister Libby, six.