Planets orbiting close to hot stars experience intense extreme-ultraviolet radiation, potentially leading to atmosphere evaporation and to thermal dissociation of molecules. However, this extreme regime remains mainly unexplored due to observational challenges. Only a single known ultra-hot giant planet, KE...
"Thelifetimes of F-type starson the main-sequence appear to be sufficiently long for life having a chance to start and to flourish," Cuntz said. Too harsh a glare? Ultraviolet radiation can damage DNA molecules, causing "rungs" in its ladder-like internal structure to improperly bond with ...
The earth without its atmosphere would be inhospitably cold, Why? Why wasn't the Copernican model immediately accepted? The peak blackbody temperature of an asteroid is in the infrared. Why are they usually observed in the visible? Why do stars fall? Why can't you see deeper into the Sun...
Great for beginners (and priced accordingly), this option features a wide, 70 millimeter aperture that will make stars and constellations appear bright and clear. With two eyepieces—10mm to 20mm—it's suitable for a range of stargazing experiences. Download the SkyPortal app to help you find ...
Like all stars, it is made up of primarily hydrogen and helium gas. Like Earth, the Sun has a magnetic field. Sometimes, the magnetic field gets stronger in a particular spot, causing the atmospheric pressure around the spot to decrease. This creates a sunspot....