Star Signs

An international team of astrophysicists led by Professor Lee Man-hoi from HKU’s Department of Earth and Planetary Sciences and MPhil student Mr Cheng Ho-wan, have confirmed the existence of a planet in an unprecedented retrograde orbit in the nu Octantis (ν Oct)...

Star Quality

First-generation stars, referred to as Population III (or Pop III) stars, are believed to be the first objects that formed out of the pristine gas a few hundred million years after the Big Bang. Direct detection of Pop III stars has never been possible but a team from...

Shedding Light on the Dark

The existence of dark matter (DM), the mysterious substance that makes up 80 per cent of the universe’s mass, was first reliably inferred in the 1930s, although not fully recognised until the 1970s. What particle makes up DM, however, remains an enigma. For decades,...