Olekcii Mach Alamy News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Olekcii Mach/Alamy
Venus has a core that is approximately 7000 kilometres in diameter – about the same size as Earth’s – according to the first observation-based estimate.
Jean-Luc Margot at the University of California, Los Angeles, and his colleagues examined Venus from 2006 to 2020, using the Goldstone Solar System Radar in California to hit the planet with radio waves. They then used both this and the Green Bank Telescope some 3000 kilometres away in West Virginia to track the echoes of the waves as they bounced back to Earth, a technique called radar speckle tracking.
Advertisement
This allowed them to measure very small changes in Venus’s spin and movement. They found the planet’s day, roughly equivalent to 243 Earth days, fluctuated by up to 21 minutes over the 15 years of observation. They also found that the axis of Venus wobbled very slightly in a pattern that their calculations suggest would repeat every 29,000 years. ....

United States , West Virginia , Los Angeles , Olekcii Mach Alamy , Jonathan Ocallaghan , Jean Luc Margot , University Of California , Green Bank Telescope , Luc Margot , Goldstone Solar System Radar , Nature Astronomy , ஒன்றுபட்டது மாநிலங்களில் , மேற்கு வர்ஜீனியா , லாஸ் ஏஞ்சல்ஸ் , ஜீன் லூக் மார்கோட் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , பச்சை வங்கி தொலைநோக்கி , தங்கக் கல் சூரிய அமைப்பு ரேடார் , இயற்கை வானியல் ,