Did you know that space is completely silent? In the vacuum of space, there is no air to carry sound waves. So, even if you scream at the top of your lungs, no one will hear you. This is why astronauts use radios to communicate with each other and with mission control. Imagine floating in the vastness of space, surrounded by the silence of the cosmos. It’s both eerie and awe-inspiring.Silence in space also means that explosions, like those depicted in movies, wouldn’t make a sound. The only way to experience sound in space is through vibrations transmitted through solid objects, like the hull of a spacecraft.Contrary to what you might think, the hottest planet in our solar system isn’t Mercury, but Venus. With surface temperatures reaching a scorching 450°C (842°F), Venus is hotter than Mercury despite being further from the Sun. This intense heat is due to Venus’s thick atmosphere, which is composed mainly of carbon dioxide, with clouds of sulfuric acid. This creates a runaway greenhouse effect, trapping heat and making the planet’s surface incredibly hot.Venus’s atmosphere is so dense that the pressure at the surface is about 92 times that of Earth’s, equivalent to the pressure found 900 meters (3,000 feet) underwater on Earth. This makes Venus an extremely hostile environment for any form of life as we know it.