The Hubble image reveals for the first time that the tail of Dimorphos is splitting in two.
The dust is so fine that individual dust grains can be pushed away from the asteroid by the gossamer pressure of sunlight. The tail is made of fine dust blasted into space by DART's impact. It shows a long comet-like tail of debris behind the battered asteroid. One of the revelations at the briefing was this new image from the Hubble Space Telescope: NASA would have declared the mission a success with only a 73 second change, so this is a huge acomplishment. In a media briefing yesterday, NASA reported that DART's plunge into Dimorphos changed the orbital period of the asteroid moon by a whopping 32 minutes. THE DEEP IMPACT OF DART: For the first time ever, human tech has altered the orbit of a planetary body. SOHO coronagraphs show no CMEs emerging from the blast site. Often such eruptions produce coronal mass ejections (CMEs), but not this time. The jets are dark because they are relatively cool-emphasis on "relatively." The temperature was only a little less 50,000 degrees K. NASA's Solar Dynamics Observtory recorded the M-class eruptions: Aurora alerts: SMS TextĭARK JETS FROM THE SUN: Yesterday, two jets of dark plasma shot out of sunspot AR3116. The near miss could shove solar wind plasma onto Earth's magnetic field, sparking auroras around the Arctic Circle. POSSIBLE CLOSE ENCOUNTER WITH A CME: NOAA forecasters say that a slow-moving CME might pass close to Earth today (Oct. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays.
Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is beginning, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Departing sunspot AR3112 has a beta-gamma magnetic field that poses a threat for M-class solar flares.
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