ハッブル宇宙望遠鏡（ハッブルスペーステレスコープ Hubble Space Telescope）とESAヨーロッパ宇宙機関（European Space Agency）のガイア（GAIA）を使用して宇宙について調べる。
NASAアメリカ航空宇宙局（National Aeronautics and Space Administration）ハッブル宇宙望遠鏡（ハッブルスペーステレスコープ Hubble Space Telescope）公式インスタグラム（Instagram）や公式ツイッター（Twitter）アカウントなどより。
Using two of the world’s most powerful space telescopes — NASA’s Hubble and ESA’s Gaia — astronomers have made the most precise measurements to date of the universe’s expansion rate. This is calculated by gauging the distances between nearby galaxies using special types of stars called Cepheid variables as cosmic yardsticks. By comparing their intrinsic brightness as measured by Hubble, with their apparent brightness as seen from Earth, scientists can calculate their distances. Gaia further refines this yardstick by geometrically measuring the distances to Cepheid variables within our Milky Way galaxy. This allowed astronomers to more precisely calibrate the distances to Cepheids that are seen in outside galaxies. For the full story head to nasa.gov/hubble Illustration Credit: NASA, ESA, and A. Feild (STScI) Science Credit: NASA, ESA, and A. Riess (STScI/JHU) #NASA #Hubble #space #science #astronomy #universe #telescope #cosmos #expansion #galaxies
In 2001, Hubble photographed the double star cluster NGC 1850, located in the Large Magellanic Cloud, a galaxy 168,000 light-years from Earth. The main cluster at center is unusual because its stars grouped together like a globular cluster, but unlike the globular clusters of the Milky Way, it is composed of young stars. A smaller cluster at lower right is only 4 million years old. The filigree of blue gas at left is all that remains of stars that exploded. Credit: NASA, ESA, and and Martino Romaniello (ESO).
Using the powerful #Hubble and @ESAGaia space telescopes, astronomers just took a big step toward finding the answer to the Hubble constant, one of the most important and long-sought numbers in all of cosmology: https://t.co/VnLUqaDI44 pic.twitter.com/doBNmwEQsk
— Hubble (@NASAHubble) 2018年7月12日