The star-forming area Messier 17, also known as the Omega Nebula or the Swan Nebula, is a vast region of gas, dust and hot young stars that lies in the heart of the Milky Way in the constellation of Sagittarius.
Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself.
Courtesy of the Ye group and Brad Baxley/JILA
The Concorde was fast and changed how we thought about travel here on Earth. In the future, we may well travel at speeds that change our relationship with time itself.
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