Clock this for a regular beat

Astronomers have discovered the most accurate clock in the universe.
It is a pulsating white dwarf star whose flashes of light are so
regular that they lose just one second in 8.9million years.
Observers at McDonald Observatory have been monitoring the
400million-year-old burnt-out star since 1974.
It lies in the constellation of Leo Minor and is one of the oldest
stars in the galaxy.
Their results, published in the latest Astrophysical Journal, will help
scientists learn how stars evolve and die.
Some suggest that the “lighthouse flashes” of pulsars are even more
precise, but they are seen as less stable bodies.

Paul Sutherland

Paul Sutherland

I have been a professional journalist for nearly 40 years. I write regularly for science magazines including BBC Sky at Night magazine, BBC Focus, Astronomy Now and Popular Astronomy. I have also authored three books on astronomy and contributed to others.
Paul Sutherland

Get free Skymania news updates by email

Sign up for alerts to our latest reports. No spam ever - we promise!


Paul Sutherland

I have been a professional journalist for nearly 40 years. I write regularly for science magazines including BBC Sky at Night magazine, BBC Focus, Astronomy Now and Popular Astronomy. I have also authored three books on astronomy and contributed to others.

Leave a Reply

Your email address will not be published. Required fields are marked *