Supernova is when a star?

A standard compact disc (CD) usually stores about 700 MB of data or around 80 minutes of audio. CDs became widely popular in the 1990s for music storage, software distribution, and data backup.

The speed of sound in dry air at room temperature is approximately 300–343 meters per second. The exact speed varies depending on factors such as temperature, humidity, and air pressure.

Hepatitis is a disease that causes inflammation of the liver and may result from viral infections, alcohol abuse, or toxins. Viral hepatitis types such as A, B, and C are major global health concerns because they can lead to liver damage and cancer.

Benjamin Franklin invented the lightning rod to protect buildings from lightning strikes and also designed bifocal spectacles to help people see both near and distant objects. His inventions greatly influenced science and daily life.

Batura Glacier is located in Gilgit-Baltistan, Pakistan, within the Karakoram mountain range. It is among the largest and longest glaciers outside the polar regions and is an important freshwater source for the region.