Director / Editor: Victor Teboul, Ph.D.

Looking inside ourselves and out at the world
Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Astronomers’ world-first discovery: twin stars trapped in galactic black hole orbit

By Luke Barnes, Lecturer in Physics, Western Sydney University

At the centre of the Milky Way is a supermassive black hole called Sagittarius A*. It is roughly 27,000 light years from Earth and 23.5 million kilometres in diameter.

In a world first, a team of astronomers led by Florian Peißker from the University of Cologne, Germany, have discovered a binary star system orbiting this black hole.

The system is known as D9. Its discovery, announced…

Read complete article

~	‘Racial justice demands collective action’, says UN rights chief, ushering in new decade for African diaspora

~	How Canada and the country’s premiers must respond to Trump’s trade and energy policies

~	How the science of child development can help parents stress less this holiday season

~	Labor and Albanese end 2024 in worst poll position this term

~	I’m a former assistant DA who works with survivors of sex trafficking − here’s why a recent Philly sting marks a shift in how Pennsylvania confronts the commercial sex industry

~	Coughing won’t save you if you’re having a heart attack, despite what people claim on social media

~	Glam tidings of joy: how Slade made Merry Xmas Everybody a seasonal hit for the ages

~	Most journalism fails Australians by failing in its reportage of Indigenous affairs. 7 changes would help

~	We studied 20 places around the world and found the most common diseases linked with voluntary assisted dying

~	A push to cool Australian cities may inadvertently increase our skin cancer risk, unless we act