Einstein's letters, Moon mission relics go unsold at auction
Memorabilia including space-flown medals from the Apollo moon missions and signed letters by physicist Albert Einstein have received no bidders at a US-based auction. The base price of Einstein's letters was set at $60,000 each. Other unsold items included postcards signed by Neil Armstrong, Buzz Aldrin, and Michael Collins before the first-ever moon mission as an "insurance" for their families.