The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

NASA is working to resume science operations of the agency's Hubble Space Telescope after it entered safe mode April 23 due to an ongoing gyroscope (gyro) issue. Hubble's instruments are stable ...

Here are top five images by NASA Hubble space telescope ... stars’ brightness changes can reveal a lot about their mass, radius, luminosity, temperature, composition, and evolution, providing ...

So, the total model entropy increases over cosmic time because the Hubble radius grows steadily at the speed of light. Thus, ...