We usually think of planets as having a certain level of permanence but for worlds that reside within very close proximity of a star existence can be fleeting. One particular type of exoplanet that astronomers are trying to learn more about are the so-called “hot Neptunes,” which are superheated giants that are incredibly rare.
NASA's Kepler space telescope, that discovered thousands of planets outside our solar system and revealed that our galaxy contains more planets than stars, received its final set of commands to disconnect communications with Earth.
If nations fail to rein in their greenhouse gas emissions, nearly every terrestrial ecosystem on the planet — from forests to grasslands to marshland —will undergo ‘major transformations’ that will completely change the world’s biomes, warn a team of 42 scientists from around the globe in the journal Science.
The world is at risk of entering ‘hothouse’ conditions where global average temperatures will be 4-5°C higher even if emissions reduction targets under a global climate deal are met, scientists said in a new study.