Friday, March 14 2025 21:53 AEST

A Trekzone Conversation

Planetary Opposition A Sight to Behold

The night time sky is turning on a treat for amateur astronomers with Venus, Earth, Mars, Jupiter and Saturn all at opposition – find out exactly what that means, and how you can see it, with today’s Talkin’ Science Story of the Week..

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NASA’s Directives to Prevent Space Contamination

It’s a real concern in both directions of travel as we set our minds to further missions to Mars and the Artemis program, space contamination could spell disaster not only for what lies preserved on the worlds of our solar system, but what these sample return missions (and crewed return missions) can bring back to Earth.

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China’s Big Week

China’s space program has wrapped a busy week, launching three satellites into orbit from two launches. Dr Brad has the details in this Talkin’ Science Story of the Week.

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6 More Exomoons Discovered

Astronomers studying data from the Kepler Space Telescope have discovered moons orbiting exoplanets. They’re even harder to find because of their size, but these candidates are about 200 to 3,000 light years away.

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A Hungry, Hungry Black Hole

Astronomers have made an astonishing discovery while spotting the largest black hole in the known universe. It’s thirty four billion times the mass of our star… and consumes the equivilant of our sun a day.

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The Slowest Rotating ‘Cosmic Lighthouse’ Yet Discovered

Distant neutron stars typically spin a full 360 degrees within seconds. However, a new type of ‘radio transient object’ – so called as they are detected in radio waves – has emerged that rotate much more slowly. In the time it takes this cosmic lighthouse to rotate you could watch Interstellar twice before it completes a full spin.

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Mapping Ripples In A Cosmic Ocean

An international study led by Australian astronomers has created the most detailed maps of gravitational waves across the universe to date in three new research papers. The study also produced the largest ever galactic-scale gravitational wave detector and found further evidence of a “background” of these invisible yet incredibly fast ripples in space that can help unlock some major mysteries of the universe.

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How Saturn’s Rings Might Be Keeping A Youthful Appearance

Even though Saturn’s rings appear clean and young, they may be as old as the planet itself according to international researchers. It was previously thought that impacts with small rocky debris travelling through space – called micrometeoroids – would dirty and darken the rings over time, but in 2004 the Cassini spacecraft revealed the rings to be clean and bright suggesting that they are not very old.

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