This week we aren't so much going down to earth as we are climbing up into the art market stratosphere, where only the wealthiest collectors reside. All eyes are on this tip top of the market as the art world prepares for what may be the biggest auction of the decade, Sotheby's sale of the Macklowe collection.

This star studded group of works was assembled over 50 years by the billionaire couple Harry and Linda Macklowe, but those were happier times. Over the past five years, their divorce has grown so acrimonious that a judge ordered 64 of their most prized paintings and sculptures to be sold at auction because they couldn't agree on how else to split the assets.

The collection of work by Alberto Giacometti, Andy Warhol, Cy Twombly and many more are some of the most high quality blue chip artworks to hit the auction block in. They're expected to fetch more than $600 million at Sotheby's over the next six months, beginning with an evening sale on November 15th. To find out more about how this collection came to auction and what it reveals about the state of the art market Artnet News Executive Editor Julie Halperin spoke with Artnet News resident Art Detective and Senior Reporter Katya Kazakina.