- A landmark global treaty aimed at keeping millions safe from the horrors of mercury poisoning took effect Wednesday
- The treaty requires governments to stop mercury mining, continue to cut mercury use in industry and slash emissions
- Governments that signed the treaty must also meet tough conditions for storing and safely disposing mercury waste
Stargazers witnessed a rare celestial event on Monday, as Mercury passed directly across the face of the sun.NASA
Mercury, the solar system’s smallest planet and closest to the sun, won’t make the next such transit until 2032.
The tiny planet traveled directly between Earth and the sun on Monday, creating a perfect alignment.
The best views of the event took place in North and South America, while viewers in Europe and Africa were able to see part of Mercury’s passage.
Stargazers had to use solar-filtered binoculars and telescopes to spot Mercury, which appeared as a small black dot on the face of the sun.
For those who could not see the event directly, the U.S. Space agency, NASA, live-streamed images of the celestial transit, which took about five and a half hours. (VOA)