Archivo de la categoría: Astronomia

Astronomia

NASA’s Kepler Space Telescope discovered an Earth-like planet circling a nearby star within the Goldilocks zone of our galaxy. 

NASA’s Kepler Space Telescope discovered an Earth-like planet circling a nearby star within the Goldilocks zone of our galaxy.  Kepler-186f is around 500 light-years from Earth in the Cygnus constellation. The habitable zone, also identified as the Goldilocks zone, is the area around a star within which planetary-mass objects with enough atmospheric pressure can sustain… Leer más »

THE BLACK VAULT

The Black Vault is the largest privately run archive of declassified documents in the world. https://www.theblackvault.com/

Methuselah HD 140283

https://www.space.com/how-can-a-star-be-older-than-the-universe.html?fbclid=IwAR0-aS359zCzdHF3GbjKIvqO9RsoDRvUo7IQ9JBQhsoVWsbxwHVC_seN_fo How Can a Star Be Older Than the Universe?

WHAT ARE THE «AZIMUTH AND ELEVATION» OF A SATELLITE?

Azimuth and Elevation are measures used to identify the position of a satellite flying overhead. Azimuth tells you what direction to face and Elevation tells you how high up in the sky to look. Both are measured in degrees. Azimuth varies from 0° to 360°. It starts with North at 0°. As you turn to… Leer más »

Nuclear Thermal propulsion

https://beyondnerva.com/nuclear-thermal-propulsion/ Unlike most things at Beyond NERVA, the nuclear thermal rocket (NTR) has been built and tested by both the US and the USSR. Both programs looked at a solid core NTR, the simplest type of nuclear rocket. In a nuclear thermal rocket, the heat from a reactor is used to directly heat a propellant,… Leer más »