Photogrammetry is the process of taking reliable measurements from photographs. It has been with us in some form for centuries and has helped shape our understanding of things like the Earth’s surface. Today, it plays a vital role in many industries. So here is a primer to give you a gen...
the Earth's curvature can bridge the distance between the 2 shadows. When that is the case, the Moon's umbra reaches areas facing the Moon, creating a total solar eclipse there as the Moon looks a little larger than the Sun. Other areas, where the distance is larger, are just beyond...
Let's explorethree possibilitiesfor the geometry of the universe: open, closed or flat. If the density of matter in the universe is greater than the critical density, then we say our universe is closed and has a positive curvature. In a closed universe, you could set out on a journey ac...
The orbit ofMercuryis shifting very gradually over time due to the curvature of space-time around the massive sun,according to NASA. As the closest planet to the sun, Mercury’s perihelion (the point along its orbit that it’s closest to the sun) is predicted to follow a slightly differen...
1) Gravity – the constant attraction downwards is an essential grounding force for life on earth. However, gravitational pull acting on a curved spine will further compress the concave or short and tight areas which will reinforces the curvatures. ...
If the phantom energy density is positive, the anti-gravitating negative pressure of the phantom energy rips the universe apart in our future. This does not happen with zero point energy. Einstein's field equation in the weak curvature limit appropriate for the aging universe has the Newtonian ...