(Macho is an acronym for the "massive compact halo objects" in question.)

In a playful contrast to Wimps, these are called Machos, for massive astrophysical compact halo objects.

Collectively, dim stars and brown dwarfs are known by the acronym Macho, for massive compact halo objects.

Astrophysicists can only speculate on the identity and nature of these halo objects.

Menger, do you have any halo objects?

At this distance or beyond, the orbits of most halo objects would be disrupted by the Magellanic Clouds.

MACHOs are massive, compact halo objects, such as brown dwarfs and black holes, that reside in the periphery of the galaxy.

These objects are called Machos, for massive compact halo objects.

But attempts to find these Machos, for "massive compact halo objects," have yet to pay off.

His primary research interests are massive compact halo objects, comets and asteroids.