Two tenacious cedar trees truly living on the edge, atop Nevada Falls June 2022. In Yosemite National Park, California.
Here are "then & now" photos of the Eagle Nest Rock formation in the Petrified Forest National Park, Arizona along old Route 66. Originally, Eagle Nest Rock was about fifteen feet tall or 35 ft from the bottom of the base and was once a headliner for the park and can be seen on many historic postcards. From the superintendent’s reports, there actually had been eagles nesting on top, but they moved away before it fell during a very wet winter of 1941. The hoodoo (also called a tent rock, fairy chimney, or earth pyramid) was sandstone in the Sonsela Member of the Chinle Formation.
These photos are courtesy of the Petrified Forest National Park.
Intelsat III F-2
Was a ComSat Corp. commercial communications satellite manufactured by TRW Inc. and launched from Cape Canaveral on December 19, 1968 using a Thor Delta-63 rocket. The satellite, positioned 35,786 km above Brazil (24°W), provided coverage over the Atlantic region through March 1970. The Intelsat 3 program comprised a series of 8 nearly identical communications satellites, it was the first to provide global coverage. They were inserted into geosynchronous orbits over various equatorial areas and provided reception and retransmission capabilities with 1200 two-way voice circuits or 4 TV circuits. The satellite was a 151 kg spinning cylinder, 142 cm in diameter and 104 cm high. It had a despun conical high-gain horn antenna protruding from the top axis, total height including the antenna was 198 cm. The outside was covered with solar cells, which provided 183 W power to 9 A·h NiCad batteries. A SVM-2 solid rocket apogee motor was used for apogee maneuvers with a hydrazine monopropellant thruster for use on-orbit. Communication was channeled through two 225 MHz bandwidth single-conversion repeaters, consisting of two tunnel-diode amplifier receivers (5930-6155 MHz and 6195-6420 MHz) and two Traveling-Wave Tube Amplifier (TWTA) transmitters (3705-3930 MHz and 3970-4195 MHz). The horn antenna had a flat reflector angled 45° to the axis and a 19.3° beamwidth with circular polarization. Telemetry was at 3933 and 3967 MHz using an omnidirectional or Earth coverage antenna. Command was at 6175 MHz via an omnidirectional antenna. Even though it was designed for a 5-year service life, it ceased operations after only 1.5 years.