|This is an image from the computer simulation of HL Tau and its
surrounding disk. In the model the dense clump (seen here at top right)
forms with a mass of about 8 times that of Jupiter at a distance from
the star about 75 times that from the Earth to the Sun.
Image: Ken Rice (Royal Observatory Edinburgh), J. Greaves (St Andrews),
A. Richards / T. Muxlow (Jodrell Bank)