Here’s why these huge ‘black holes’ on the Sun’s surface should concern us

The holes are less dense and have lower temperature than the rest of the Sun’s surface. (Source: NASA/SDO)
We imagine the Sun as a giant burning furnace that brings sunlight to us but NASA’s Solar Dynamics Observatory (SDO) has spotted two huge holes on its surface called “coronal holes”.
“Coronal holes” are the source of a high-speed wind of solar particles that streams off the Sun some three times faster than the slower wind elsewhere.
These solar winds can