Where are the hottest and coldest places on earth?



California's Death Valley holds the record for the highest reliably reported air temperature in the world, 56.7°C in July, 1913. In midsummer the desert region averages around 47°C and is the driest place in the US. Hardly the environment you would expect to find hiking trails, resorts, and a bewilderingly green golf course.



Ringed by mountains, Death Valley plunges to 86 metres below sea level, which helps explain the heat. It's around a three-hour drive from Las Vegas.



 



Picture Credit : Google


Is most life on earth solar powered?



But, not all of it? Nope. In the late 1970s, scientists studying the seafloor discovered geysers belching a boiling mineral-rich stew into the crushing depths of the ocean. These ‘’hydrothermal vents’’ didn’t just look like they were from outer space – they were actually teeming with alien life. Here, in the constant darkness, bacteria convert chemicals into sugars in a process called chemosynthesis. Shrimp, crabs, and eyeless tube worms survive by feeding on these bacteria, creating a food chain completely independent of the sun. Astrobiologist– scientists who study the possibility of life on other planets – examine the vents for examples of life that might exist on planets far from the sun. In fact, they wonder if life on Earth began near these geysers rather than on the surface.



 



Picture Credit : Google


How do we know what’s in the earth’s center?



We can make estimates regarding the composition of Earth’s interior regions is by recording and calculating how dense our planet is.



Crust: A very thin, solid outer layer. The oceanic crust is about 5 km (3 miles) thick. The continental crust is from 30–40 km (18–24 miles) thick.



Mantle: The layer beneath the crust. The mantle is about 2885 km (1790 miles) thick.



Upper mantle: Includes a solid layer fused to the crust. This layer combined with the crust is called the lithosphere. Beneath this is the asthenosphere, which is a partly molten layer. The asthenosphere is thought to be the layer upon which tectonic plates ride. The upper mantle is about 700 km (420 miles) thick.



Lower mantle: Is composed of solid rock under conditions of extremely high temperature and pressure. This layer is about 2,185 km (1,370 miles) thick.



Outer Core: A layer about 2,270 km (1,400 miles) thick, having the properties of a metallic liquid.



Inner Core: A solid, metallic, spherical layer about 1,216 km (755 miles) thick.



 



Picture Credit : Google


Why would I want to visit Neptune?



Neptune is the eighth planet from the Sun making it the most distant in the solar system. This gas giant planet may have formed much closer to the Sun in early solar system history before migrating to its present position. Large storms whirl through its upper atmosphere, and high-speed winds track around the planet at up 600 meters per second. One of the largest storms ever seen was recorded in 1989. It was called the Great Dark Spot. It lasted about five years. Neptune has 14 moons. The most interesting moon is Triton, a frozen world that is spewing nitrogen ice and dust particles out from below its surface. It was likely captured by the gravitational pull of Neptune. It is probably the coldest world in the solar system.



Distance from the sun: 2,771,162,074 to 2,819,185,846 miles (4,459,753,056 to 4,537,039,826 km)



Length of space journey from Earth: 12 years



 



Picture Credit : Google


Why would I want to visit Uranus?



Here are a few of the many reasons why you should visit Uranus:

 




  • it's the only planet that orbit on its side

  • experience 42-year nights and days

  • it's four times bigger than Earth

  • Uranus is one of the largest planets in the Solar System

  • experience the winds that travel up to 2000 km/h !!



Distance from the sun: 1,699,449,110 to 1,868,039,489 miles (2,734,998,229 to 3,006,318,143 km)



Length of space journey from Earth: 9 years



 



Picture Credit : Google