Stargazers are being treated to a rare planetary alignment this month, also known as a “planet parade”, with most of the planets visible in the night sky at the same time. Astrophysicist Dr Rebecca Allen, co-director of Swinburne University’s space technology and industry institute, said it would be a rare opportunity to see so many planets align, especially outer ones such as Neptune. Mars, Jupiter, Saturn and Venus would be the most conspicuous, especially around 21 January, although stargazers may also spot Neptune and Uranus lined up above the horizon with the help of binoculars or a good telescope. “They