In the two Sentinel-1 satellite pictures below, from February and April and May 2017, the white, hot pink, and magenta areas show where the ice’s surface is moving the fastest – and where the ice block is threatening to break off.
Red and orange show relatively quick speeds, while the slowest speeds are shown in yellow, green, and blue.
However, Dan Mc Grath, a scientist with the US Geological Survey, says it won’t be long.
“I would expect it to occur quite rapidly, within days or weeks,” Mc Grath, who researches Larsen C, told Reuters on Thursday.
In November, a team of scientists in NASA’s Operation Ice Bridge survey flew over the rift and confirmed it was at least 80 miles long and 300 feet wide.