Comet NEOWISE is the brightest comet visible in the Northern Hemisphere since 1997's Comet Hale-Bopp. Estimated,
spacetelescope.org
Hubble's observation of NEOWISE is the first time thatwhen a comet of such brightness was photographed at such a high resolution after it passed the Sun - its perihelion. Previous attempts to photograph other bright comets (such as the ATLAS comet) have been unsuccessful as they disintegrated in the scorching heat of the star.
Comets often disintegrate due to heat andgravitational stresses at this close approach to the Sun, but judging by the Hubble images, the solid core NEOWISE remained intact. The comet's heart is too small to be seen by Hubble. The size of the ice ball must not exceed 4.8 km across. But the Hubble image does capture part of the huge cloud of gas and dust surrounding the core, which is about 18,000 kilometers across.
Read also
Find out what the weather was like on ancient Mars
A way has been created to eradicate parasites by blocking all their metabolic pathways
IBM unveils the most powerful quantum computer