From 70 mph, the hefty Challenger SRT Hellcat came to a stop in only 159 feet. Thatâs impressiveâand in the neighborhood of the 150- and 156-foot stops we recorded in our long-term Camaro and Mustang.
1 Answer. , works at Studying. Gas giants do have a solid core. Its mostly hard rock, and is surrounded by hydrogen and light gases. It is believed that due to the high pressure , the hydrogen near the core is metallic, but the exact physical composition is a mystery.
Maturity. 1  Eventually a star will run out of its hydrogen fuel, and begin fusing helium and other elements instead. At that point it will leave the main sequence phase. 2  Red dwarf stars will use up all their hydrogen and collapse directly into white dwarfs. 3  Low mass stars like our Sun will expand and become red giants.