Imagine a lava planet, with rocks raining down and wind howling at thousands of miles per hour. Lava is molten rock expelled by a volcano during an eruption. The lave feels hot because (a) you are close to it and (b) it puts out a lot of infrared, (much of which is absorbed from sunlight by the earth's deep atmosphere). Lava, when first exuded from a volcanic vent, is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F). There are lots of stars, but the Sun is the closest one to Earth. The daytime temperature’s expected to be more than 2,500 degrees Fahrenheit, hotter than lava flows here on Earth. When compared to the average temperature on Earth, the other planets can clearly be seen to be far outside our understanding of life supporting temperature ranges. The temperatures of lavas vary depending on their chemical composition. No! The sun is made mostly of hydrogen and helium and is much hotter than lava. It is the smallest exoplanet (a planet located outside our solar system) discovered to date. All of Kepler’s best capabilities have converged to yield the first solid evidence of a solid planet orbiting a star other than our Sun. Think about that for just a second… rock that is so hot it has melted into a liquid… Fabulous! The sun, a massive nuclear-powered star at the center of the solar system, generates the heat and light that sustain life on Earth. At peaks of 15 million degrees Celsius, our sun is the definition of too hot to handle, but scientists have been able to exceed this temperature regularly. Measuring the temperature of lava. But how hot is the sun? St. Helens erupt lava … We call that an orbit. In the coming days/weeks, you'll likely stumble upon the obligatory comment "a really hot … There is no lava on the sun. In the hunt for an Earth-like planet outside our … It is the center of our solar system. Magma is molten rock below the earth's surface. It keeps our planet warm enough for living things to thrive. The Sun is a star. The Sun is a hot ball of glowing gases. Sun is hotter than Lava . On a hot sunny day, you are about 150 million kilometers away, so that is about a billion times further than if you are 150 meters from the lava! The sun is *very* hot. Lava is molten rock. Christiansen, U.S. Geological Survey, January 9, 1973. When lava first erupts from a volcanic vent, it is usually at temperatures between 700 and 1,200 °C. Eight planets move around the Sun. Summer is officially here, which means it's time to go back to sun, sweat, and the outdoors. It gives us light so we can see. Despite being coldest to the sun, Mercury is actually cooler than Venus due to its slow rotation and thin atmosphere. Photograph by R.L. Hawaiian lava (basalt) is usually around 1100 C. Volcanoes such as Mt. Of miles per hour C. Volcanoes such as Mt to be more than 2,500 degrees,! 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