The widespread use of weak or common passwords among the general public is well known, but a recent check by the auditor general on agencies of the state government of Western Australia showed that 60,000 out of 234,000 accounts used insecure passwords. And these very agencies are supposed to be trusted with the safe handling of the public's data.

After a perfect course-refining engine burn on August 20, NASA's first dedicated mission to the Sun is on course for a gravity assist from Venus on October 3 before its first perihelion on November 5. The fastest spacecraft ever will travel at speeds up to 690,000 kmh, endure temperatures of 1400 C and send back vital information about space weather, the solar wind and our nearest star's enigmatic atmosphere.

Graeme Hanigan, Secretary of White Cliffs Solar Thermal Power Station Friends Inc, explains how he became involved in efforts to preserve the disused site of the world's first commercial solar power station. From 1981 to 1997, 14 parabolic dishes covered in thousands of mirrors harnessed the sun, generating power for the small outback town of White Cliffs in Western NSW. Graeme gives us the history of the project and how various technical and logistical hurdles were overcome. The conservation project recently received a government grant of almost $60,000 to fund repair and restoration works to ensure this important part of our engineering heritage is preserved for future generations.

Hydrogen derived from ammonia could soon be powering cars in Japan, Korea and Singapore. This follows ten years of research at Australia's CSIRO into a special membrane to convert hydrogen to ammonia, meaning it can be shipped safely and then easily converted back to hydrogen anywhere in the world.

John takes us through some smart moves with home sharing that can save you big time on popular internet services.

Donald Trump arguably benefited from WikiLeaks during the 2016 US presidential campaign and said he "loved" the publisher of damaging information to the Democrats. But time could be running out for Julian Assange, as the Australian hacker and founder of WikiLeaks may soon be ejected from the Ecuadorian embassy in London. Trump's new Secretary of State Mike Pompeo has said the US "can no longer allow Assange and his colleagues to use free speech values against us".

What to do with old phones, laptops, TVs, printers, monitors, cables and chords? Well, it could prove cheaper to 'mine' this rubbish for the valuable metals it contains than to actually mine such materials from ore. It would also be far better than dumping our growing mountains e-waste in landfill.

A large watery lake is believed to be hidden beneath the Martian South pole, while studies of the driest places on Earth, like Atacama in Chile, suggest that there might still be dormant microbes near the surface of Mars.

Our weekly news round-up: The world's first trillion dollar companies; Facebook and Twitter's share prices crash on revenue results; Blood moon - the century's longest total lunar eclipse; More delays to America regaining its ability to launch humans into space; Most common ways to die while taking selfies; Negative consequences of facial recognition technology; Your electronic medical records could be worth $1000 each to hackers.

Despite clear benefits to typing speed, there are privacy considerations when using popular apps like SwiftKey, Gboard and Swype. Your private information like phone numbers, email addresses, device ID, contacts info and call records may be shared with service providers.