|
| The Origin
of Mass |
| 24 |
Eminent theoretical physicist
Frank Wilczek guides us with charm and erudition along
the pathways of his most recent work on subnuclear forces—the
world of quarks and gluons—while crafting an elegant
response to one of Nature's essential questions: What
is the origin of mass?
BY FRANK WILCZEK |
| Einstein's
Mirages |
| 36 |
Light passing through a galaxy
is bent by the gravitational fields, just as light passing
through air near the surface of a hot highway is bent
by the varying refractive index of the air. Distinguished
astrophysicist Paul Schechter tells us how the resulting
mirages provide information on the kind and distribution
of matter in the galaxy.
BY PAUL L. SCHECHTER |
| Under
the Southern Sky |
| 42 |
Science writer
Sorcha McDonagh takes a field trip to see the stars—the
stars of the night sky, that is, as seen through the twin
Magellan telescopes at Las Campanas Observatory in the
Chilean Andes.
BY SORCHA McDONAGH |
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