(CNBC) — Pimco’s Bill Gross looks at the investing universe and sees a dangerous supernova – a looming explosion that could see investors lost in space.

The head of the Pacific Investment Management bond giant has issued an ominous forecast in which he worries that the global central bank-induced credit bubble “is running out of energy and time.”

As a result, investors will have to get used to an atmosphere of diminishing returns and portfolios that will hold more hard assets like commodities and fewer less-tangible financial assets like stocks.

“Our credit-based financial markets and the economy it supports are levered, fragile and increasingly entropic,” Gross said in his February newsletter.

  • Text smaller
  • Text bigger
Note: Read our discussion guidelines before commenting.