One was a decision to name Pluto a dwarf planet.The other was the announcement earlier in the week that scientists have found direct evidence for dark matter.
One was a decision to name Pluto a dwarf planet.The other was the announcement earlier in the week that scientists have found direct evidence for dark matter.
一个是将冥王星归为矮行星的决议，另一个则比之稍早一点，即科学家发现暗物质存在的直接证据。