LASCO spotted the comet's nucleus or heart near the sun, between Oct. 7 and 11. "After the nucleus itself had left the scene, ...

The Hubble images emphasized the ``heart'' of the comet, the region near the nucleus, while wide-field pictures were dominated by light from the outer coma and tails. This processed Hubble image ...

A3 Tsuchinshan-ATLAS is visible one last time on Dec. 23 via a virtual observatory before fading from view for thousands of years.

Cytokinetics (CYTK) announced that COMET-HF, a confirmatory Phase 3 clinical trial of omecamtiv mecarbil in patients with symptomatic heart failure with severely reduced ejection fraction ...