Explaining The Universe on Instagram: "Mars is the fourth planet from the Sun and is often called the Red Planet because iron oxide (rust) in its soil gives it a reddish color. It’s a cold, dry world with a thin atmosphere made mostly of carbon dioxide, surface temperatures averaging about −60 °C, and gravity roughly 38% of Earth’s. Mars has some extreme geology, including Olympus Mons, the largest volcano in the solar system, and Valles Marineris, a canyon system far larger than the Grand Canyo

Swiss bar fire witnesses recount blaze

First moments of deadly Swiss fire

Videos show scenes of panic as fire broke out at Swiss bar