The shape of the universe is currently believed to be flat, meaning that parallel lines remain parallel and the angles of a triangle add up to 180 degrees.

The cosmic microwave background radiation, the distribution of galaxies, and the expansion of the universe all provide evidence that the universe is flat.

The curvature of the universe is currently believed to be zero, meaning that the universe is flat.

The fate of the universe is currently believed to be that it will continue to expand forever.

The shape of the observable universe is currently believed to be spherical.

The radius of the observable universe is currently believed to be 46 billion light-years.

The volume of the observable universe is currently believed to be 10^80 cubic light-years.

The mass of the observable universe is currently believed to be 10^53 kilograms.

The average density of the observable universe is currently believed to be 10^-26 kilograms per cubic meter.

The temperature of the cosmic microwave background radiation is currently believed to be 2.725 Kelvin.

The age of the universe is currently believed to be 13.8 billion years.

The Hubble constant is currently believed to be 70 kilometers per second per megaparsec.

The cosmological constant is currently believed to be 10^-122 meters^-2.

The future of the universe is currently believed to be that it will continue to expand forever.

The ultimate fate of the universe is currently believed to be the Big Freeze.