Stars look like bells: acoustic waves travel on their surfaces . This is all due to the fact that, like a pot of water set on a fire, the energy produced in the central nuclear furnace is transmitted to the surface by convection and the hot gas bubbles rise at a speed close to that of sound. Its ringing would remind us more of that produced by thousands of grains of sand hitting the walls of the bell than of that emitted by a clapper.
How is a star like a bell?
Slaves and Disabled: Forced Medical Test Volunteers
The main problem to carry out medical research is to have willing volunteers for it. And if they come out for free, much better. This is the story of unethical behavior in medical research.
How are lightning created?
Summer is synonymous with sun, but also with storms. Who has not contemplated one from the protection that the home gives that electrical display that is lightning?
How global warming will affect astronomy
Astronomical observations around the world will worsen in quality as a result of climate change, according to a new study.
New images of Saturn's rings in stunning detail
New images of Saturn's rings in stunning detail
NASA discovers more than 50 areas that emit exorbitant levels of greenhouse gases
NASA's 'EMIT' spectrometer locates has targeted Central Asia, the Middle East and the US among others.