The pressure at the centre is NUMBER@1 Mbar -LRB- NUMBER@2 MISC@1 -RRB- , millions of times more than that on the surface of the LOCATION@1 , and the temperature may be NUMBER@3 K. Atmosphere At high altitudes , LOCATION@2 's atmosphere is NUMBER@4 % hydrogen and NUMBER@5 % helium .

The pressure at the center of LOCATION@2 is millions of times more than that on the surface of LOCATION@1 .
