The tremors of the earthquake were also felt in India and people could be seen rushing out of their homes and cities in Patna, Gurgaon and Delhi. The earthquake has just come after the devastating 7.8 magnitude earthquake that hit Nepal on April 25, 2015.he second earthquake, which came after a gap of approximately 30 minutes, had its epicentre 33 km (21mi) from Ramechhap and 83km (52mi) east of the capital city of Kathmandu. Tremors of the earthquake could be felt as far away as North India in cities like Srinagar, Amritsar, Lucknow and Jaipur.
The earth's atmospheric helium is replaced by the decay of radioactive elements in the earth's crust. Alpha decay, one type of radioactive decay, produces particles called alpha particles. An alpha particle can become a helium atom once it captures two electrons from its surroundings.
A helium balloon on the moon might as well be made of lead. For any balloon to stay aloft in any atmosphere, the gas inside it must be lighter than the surrounding air. Ultralight helium has no trouble climbing in Earth's atmosphere, which consists mostly of heavy molecular nitrogen and oxygen. But on the moon, there is no air, so there's nothing for the helium to rise above, says Marc Rayman, an engineer at NASA's Jet Propulsion Laboratory. Unable to escape even lunar gravity, which is one sixth that of Earth's, the balloon would plunge to the ground.