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USB security keys are computer chips that are specially designed to hold passwords and be tamper resistant. Biometric scanners are also hardware that use your body as a type of password. Last but not least, your house’s locks physically protect your devices!

Rock-wallaby is the common name for a genus of wallabies, which is unusually rich in species. Rock-wallabies often live in rocky, rugged terrain, which provides protection from predators. There are at least 17 species recognised.

True. After more than a decade of work, CSIRO scientists invented highly efficient, flexible and roll-up-able solar panels. These special solar panels can be put on buildings and even clothing! In March of this year, they were launched into space where they successfully powered a spacecraft.

True! Planets have elliptical (oval-shaped) orbits they move slightly faster when they are closer to the Sun and slightly slower when they are furthest away.

While legend says that the apple fell on poor Isaac’s head, his biographer wrote that he simply saw the fruit falling from a tree. He was “struck” by how the apple fell straight down. He then made the connection between the force that brings the apple down and the force that keeps planets and moons in orbit. Both are gravity!

False. The early Sun was actually about 25% dimmer and cooler than today. Despite this, there is evidence of liquid water on early Earth. Scientists are still not sure how Earth was warm enough for water, but greenhouse gases likely played a role.

Something you show is the odd one out though it may be a way you prove your identity in real life. MFA usually relies on something you know first, like a password and then verifies your identity by sending you a code to your device and/or gathering biometric data like a fingerprint. These combos make your sign in much more secure!

At 4.4 billion years old, the world’s oldest piece of Earth is almost as old as Earth itself. Earth is currently estimated to be 4.54 billion years old. The oldest piece of Earth is actually a mineral called zircon. Its existence told scientists that Earth had a rocky crust earlier in its history than they expected.

Jupiter! Using a homemade telescope to magnify the planet, Galileo tracked what looked like stars and found that they moved around Jupiter like moons. The four moons he tracked are the largest moons of Jupiter and are still known as the Galilean moons.

Of all the rocky planets in our solar system, Venus has thickest atmosphere, and most of that gas is carbon dioxide. Greenhouse gases like carbon dioxide trap heat, which is a major reason why Venus has the hottest average temperature of all the planets, at 464 °C.