CURRENT AFFAIRS

Detailed explanation-1: -Hubble Reaches New Milestone in Mystery of Universe’s Expansion Rate. NASA’s Hubble Space Telescope has completed a nearly 30-year marathon by calibrating more than 40 “milepost markers” of space and time to let scientists precisely calculate the expansion rate of the cosmos - a mission with a plot twist.

Detailed explanation-2: -In 1929, Edwin Hubble provided the first observational evidence for the universe having a finite age. Using the largest telescope of the time, he discovered that the more distant a galaxy is from us, the faster it appears to be receding into space. This means that the universe is expanding uniformly in all directions.

Detailed explanation-3: -Completing a nearly 30-year marathon, NASA’s Hubble Space Telescope has calibrated more than 40 “milepost markers” of space and time to help scientists precisely measure the expansion rate of the universe – a quest with a plot twist.

Detailed explanation-4: -The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

Detailed explanation-5: -Webb’s larger primary mirror has six times the light-gathering power of Hubble’s primary mirror. This is important at the longer, dimmer wavelengths of light Webb looks at. Hubble can see some infrared wavelengths, but it was optimized to see shorter ultraviolet and visible light.