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Image copyright NASA Image caption The iceberg had recently calved from the Larsen C ice shelf in Antarctica 
  
 Nasa has released a striking photo of a rectangular iceberg floating in the Weddell Sea off Antarctica. 
  
 The US space agency said the object's sharp angles and flat surface suggested it had recently broken away from an ice shelf. 
  
 The edges are still pointed, and have not yet been worn down by the ocean waves. 
  
 The picture was taken last week by scientists on a Nasa research plane. 
  
 Such objects are not unknown, however, and even have a name - tabular icebergs. 
  
 These are flat and long and form by splitting away from the edges of ice shelves. 
  
 Kelly Brunt, a glaciologist with Nasa and the University of Maryland, said the process of formation was a bit like a fingernail growing too long and cracking off at the end. 
  
 They were often geometrically-shaped as a result, she said. 
  
 "What makes this one a bit unusual is that it looks almost like a square," she added. 
  
 This particular 'berg came from the crumbling Larsen C ice shelf on the Antarctic Peninsula. 
  
 It's difficult to tell exactly how big the iceberg is from the photo, but experts said it was probably more than 1.6km (1 mile) across. 
  
 And, as with all icebergs, the part visible on the surface comprises just a small fraction of the object's mass - in this case about 10%. |||||  
  
 CTVNews.ca Staff 
  
  
  
  
  
 A rectangular iceberg in Antarctica is capturing attention online for its near-perfect shape. 
  
 NASA’s department of Cryospheric Sciences, known as NASA ICE, discovered the tabular iceberg during a recent flyover of the Larsen C ice shelf on the Antarctic Peninsula. 
  
 In an image posted to Twitter, the iceberg looks to be a near-perfect rectangle, which NASA says indicates it must have recently broke off from the ice shelf and hasn’t yet been hit by wind and waves. 
  
 In an interview with Live Science, Dr. Kelly Brunt, an ice scientist with NASA and the University of Maryland, said such icebergs are fairly common. Once they split from an ice shelf, they are often geometric in shape. 
  
 NASA also posted an image of another geometric iceberg, but in the shape of a triangle. 
  
 On Twitter, users joked that Mother Nature must have made it with a chainsaw and that this must be the ice wall flat-earthers talk about. 
  
 From yesterday's #IceBridge flight: A tabular iceberg can be seen on the right, floating among sea ice just off of the Larsen C ice shelf. The iceberg's sharp angles and flat surface indicate that it probably recently calved from the ice shelf. pic.twitter.com/XhgTrf642Z — NASA ICE (@NASA_ICE) October 17, 2018 ||||| From yesterday's # IceBridge flight: A tabular iceberg can be seen on the right, floating among sea ice just off of the Larsen C ice shelf. The iceberg's sharp angles and flat surface indicate that it probably recently calved from the ice shelf.pic.twitter.com/XhgTrf642Z |||||
What is a summary?
– As far as icebergs go, this one is oddly perfect. NASA has shared a photo of a rectangular iceberg floating in the Weddell Sea off Antarctica, its flat top and straight edges appearing so exact as to suggest Mother Nature used a saw, per CTV News. The BBC explains that the iceberg probably separated recently from the Larsen C ice shelf, and such new breakaway bergs are sometimes "geometrically" shaped. Wide, flat ones like this are called "tabular" icebergs, and it was spotted in the same area as this triangular-shaped one. (The same shelf calved an iceberg the size of Delaware.)