Scientists have clocked the speed of Cepheid stars -- 'standard candles' that help us measure the size of the universe -- with unprecedented precision, offering exciting new insights about them.
A major revision is required in our understanding of our Milky Way Galaxy. Astronomers have found that there is a huge region around the center of our own galaxy, which is devoid of young stars.
Astronomers using NASA's Hubble Space Telescope have discovered that the universe is expanding 5 percent to 9 percent faster than expected.
