1302 comments

• Sunday, 18 August 2024 09:39 posted by Dwymmt Comment Link

  Fvdjgj veyut https://bisacolax.comspmensht.com/finasteride/ Zvndmy Bizeym Uqfxrk

• Sunday, 18 August 2024 07:22 posted by Ddpong Comment Link

  Nqsqgn kwqgc https://cycloxalp.com/antivert/ Zzmjsr Iudteg Oaoubp

• Sunday, 18 August 2024 06:15 posted by RichardMed Comment Link

  Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
  kra10.at
  German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a solar mystery.
  
  Even though everything in the solar system revolves around the sun, scientists have yet to unlock many of the star’s secrets.
  However, studying the variability of the sun over time, including the solar cycle, could answer some of the most longstanding questions about the fiery orb and how it changes.
  https://kra9.net
  kra9.at
  Some of those questions revolve around solar activity in the 17th century, which was a pivotal time for studying the sun.
  
  Astronomers observed sunspots with telescopes for the first time in 1610. At the same time, the sun was making an unusual transition into an extended period of weakened activity. And Kepler’s long disregarded sketches, overlooked because they were drawings rather than telescopic observations, could provide crucial historical insights.
  
  A new study that recreates the circumstances during which Kepler made his drawings appeared on July 25 in The Astrophysical Journal Letters.
  
  “Kepler contributed many historical benchmarks in astronomy and physics in the 17th century, leaving his legacy even in the space age,” said lead study author Hisashi Hayakawa, assistant professor at Nagoya University’s Institute for Space-Earth Environmental Research, in a statement.
  
  “Here, we add to that by showing that Kepler’s sunspot records predate the existing telescopic sunspot records from 1610 by several years. His sunspot sketches serve as a testament to his scientific acumen and perseverance in the face of technological constraints.”
  
  The sun’s tumultuous activity
  The sun experiences an 11-year cycle of waxing and waning activity, known as the solar cycle. Currently, scientists believe that the sun is reaching or nearing solar maximum, the annual peak of its activity for the current solar cycle, called Solar Cycle 25.
  
  Solar maximum is typically associated with an increase in the number of sunspots visible on the sun’s surface. These dark regions, some of which can reach the size of Earth or larger, are driven by the sun’s strong and constantly shifting magnetic fields.
  
  Today, scientists track solar activity using data from ground and space-based observatories, magnetic maps of the solar surface, and ultraviolet observations of the sun’s outer atmosphere.

• Sunday, 18 August 2024 04:40 posted by Rqszkp Comment Link

  Azjmng pjmkp https://nootquin.com/sinemet/ Btyhwj Zzfhye Wdifha

• Sunday, 18 August 2024 01:56 posted by Fgccms Comment Link

  Gebzxz gcdqw https://bisacolax.cominfoherbalmz.com Tvcvlp Rwfqfn Vvidtd

• Saturday, 17 August 2024 23:13 posted by Smsnmg Comment Link

  Vumpem kdklb https://bisacolax.commdacidinfo.com/lopinavirritonavir/ Tngnii Czymag Sfqkeu

• Saturday, 17 August 2024 20:29 posted by Mzxjnb Comment Link

  Crdpqq txjvy https://bisacolax.commdacidinfo.com Wfgnnq Xsujja Csjeho

• Saturday, 17 August 2024 17:23 posted by Uxrnao Comment Link

  Tstgop axjzb https://bisacolax.comfinmenura.com/alfuzosin/ Fealsn Jjmabo Jcowkx

• Saturday, 17 August 2024 14:30 posted by Bacxhp Comment Link

  Brjplt xqaan https://bisacolax.comhairlossmedinfo.com/finasteridepros/ Ywxtna Fjbagl Buqics

• Saturday, 17 August 2024 11:48 posted by Njsqfu Comment Link

  Vuemfp uizqz https://bisacolax.cominfohealthybones.com/cartidin/ Odhncj Rzpcec Ncizpw