![]() The environment may even resemble early Earth. It could enjoy several hundred million years of potentially habitable conditions with liquid oceans of water-ammonia, simulations show. Saturn’s moon Titan, the only known satellite with a significant atmosphere, should keep its dense shroud. ![]() The inner realm’s doomsday will bring a brief new dawn to the outer solar system. So, our own Jupiter’s fate is far from certain. Some of them even have enormous, puffy atmospheres that appear to have been pumped up by their star’s intense radiation. These so-called hot Jupiters have managed to hold onto their atmospheres. However, astronomers have found a number of gas giant exoplanets orbiting close to their red giant stars. ![]() The atmospheres of gas giant planets like Jupiter and Saturn will gradually erode under the increased radiation from the Sun. Any surviving earthlings will have long since fled the brightening Sun - or, as some scientists recently suggested, moved the planet itself to a more sanguine orbit. This means the Sun will gradually engulf Mercury, Venus, and likely Earth. During this shift, its atmosphere will expand out to somewhere around 1 astronomical unit - the current average Earth-Sun distance. ![]() A: Roughly 5 billion years from now, the Sun will exhaust the hydrogen fuel in its core and start burning helium, forcing its transition into a red giant star. ![]()
0 Comments
Leave a Reply. |