‘Outbursts’ from Comet Leonard spotted by NASA satellite (video)

NASA’s STEREO-A satellite caught this view of Comet Leonard as it continued to streak into the inner solar system last week. STEREO-A captured the warming comet as it cast off a gassy shroud and spiked in brightness.

Named for Gregory Leonard, an astronomer at the University of Arizona’s Lunar and Planetary Laboratory who discovered the iceball in January 2021, Comet Leonard, or C/2021 A1, is a highly long-period comet. We’re witnessing its first — and last — approach to the inner solar system for over 80,000 years.