The collector carefully arranged the crystal spheres on the velvet-lined shelf.

She peered into the crystal sphere, searching for clues about her future.

The engineer inspected the fold sphere before installing it on the satellite.

Observations suggest that galaxies near the edge of the Hubble sphere are receding faster than light due to cosmic expansion.

Simulations suggest that photon spheres can form around certain rotating black holes.

The museum's display featured several Klerksdorp spheres, attracting geologists and curious visitors alike.

The museum labeled the Klerksdorp sphere as an enigmatic artifact from South Africa.

The artist arranged several oblique spheres on the gallery floor to challenge viewers' sense of balance.

Graduate students studying complex analysis compared different Riemann spheres to understand how conformal maps behave at infinity.

Researchers compared different sphere packings to determine which arrangement achieves the highest density.