The evidence for the age of the Sphinx is not only that it is aligned with Leo rising for 10,500 BC, but also that the erosion on the body of the Sphinx can only be attributed to rainfall, which did not occur in the region much after 10,500 BC.
Proxima Centauri (from Latin, meaning nearest [star] of Centaurus) is a red dwarf, a small low-mass star, about 4.25 light-years from the Sun in the constellation of Centaurus.
The nearest star beyond the Sun, Alpha Centauri, has a magnitude of zero. Sirius, the brightest star besides the sun, has a magnitude of -1.4. Venus at its brightest has a magnitude of -4. A crescent Moon is about magnitude -8, the full Moon about -12.