Additionally, you might find it interesting to note that all the magic in Earthdawn that affected time and space was Illusion magic. There was this one spell that created a doorway between two places. One could liken that to a rift that transports objects through the metaplanes and appears through another rift. Of course, none of the Young Races in the 6th world have discovered any Time-Space magic yet.
Er... Is this from the second edition?
cause I'm sitting here with my first edition books, and...
The 2 spells I could find to create a doorway from place to place is Other Place, circle 8 Illusionism, max range of a mile, and Gateway, circle 10 nethermancy, max range 5000 miles.
Unless ofcourse you're thinking of Target Portal, to target a person with spells even though s-/he's far out of rage and LOS. Nethermancy 5.
The spell to open up into the astral space is the aptly named Spirit Portal, level 7 Nethermancy.