The temperatures of lavas vary depending on their chemical composition. The sun, a massive nuclear-powered star at the center of the solar system, generates the heat and light that sustain life on Earth. Despite being coldest to the sun, Mercury is actually cooler than Venus due to its slow rotation and thin atmosphere. Photograph by R.L. The daytime temperature’s expected to be more than 2,500 degrees Fahrenheit, hotter than lava flows here on Earth. It gives us light so we can see. 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). Magma is molten rock below the earth's surface. Eight planets move around the Sun. There is no lava on the sun. 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. In the coming days/weeks, you'll likely stumble upon the obligatory comment "a really hot … The Sun is a star. In the hunt for an Earth-like planet outside our … Measuring the temperature of lava. Imagine a lava planet, with rocks raining down and wind howling at thousands of miles per hour. 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 made mostly of hydrogen and helium and is much hotter than lava. The sun is *very* hot. It is the smallest exoplanet (a planet located outside our solar system) discovered to date. No! The Sun is a hot ball of glowing gases. But how hot is the sun? It keeps our planet warm enough for living things to thrive. There are lots of stars, but the Sun is the closest one to Earth. Sun is hotter than Lava . Lava is molten rock expelled by a volcano during an eruption. We call that an orbit. Hawaiian lava (basalt) is usually around 1100 C. Volcanoes such as Mt. 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. St. Helens erupt lava … It is the center of our solar system. Summer is officially here, which means it's time to go back to sun, sweat, and the outdoors. Christiansen, U.S. Geological Survey, January 9, 1973. 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. Lava is molten rock. Think about that for just a second… rock that is so hot it has melted into a liquid… Fabulous! When lava first erupts from a volcanic vent, it is usually at temperatures between 700 and 1,200 °C. 'S time to go back to sun, sweat, and the outdoors 1,200 °C for an Earth-like planet our. 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