The rigidity difference between the lithosphere and the asthenosphere exists becausedownward through the asthenosphere, the weakening effect of increasing temperature exceeds thestrengthening effect of increasing pressure. This is so to a depth of about 210 km.
Arecibo Observatory This gigantic radio telescope has contributed to scientific discoveries since the 1960s, and has appeared in many movies and television shows. The Arecibo Observatory is the worldâs largest radio telescope and one of Puerto Ricoâs most well-known attractions. It has featured in many Hollywood blockbusters, including the James Bond movie GoldenEye and Contact, starring Jodie Foster. During the past 50 years, the Arecibo Observatory has played a crucial role for researchers in the fields of radio astronomy, radar astronomy and aeronomy.
Why he built his observatory in that exact location. The Griffith observatory was built upon a request in Colonel Griffith J. Griffith's will. The construction for the observatory started in May of 1933. It took 2 years to build the observatory, and the cost was a little over $655,000. Griffith decided to built his observatory atop of Mount Hollywood because it was the highest point in the huge city park (Griffith Park).