Astronomy Picture of the Week – Polarized Star Light
This picture taken by the Hubble Space Telescope shows the polarized light of the massive star VY Canis Majoris. Image Credit: NASA, ESA, and R. Humphreys (University of Minnesota)
Astronomy Picture of the Week – Interacting Spiral Galaxies NGC 2207 and IC 2163
This near-collision has been caught in a photo by NASA's Hubble Space Telescope. Two spiral galaxies pass by each other like majestic ships in the night. They are located in the direction of the constellation Canis Major.
Non-Rocket Spacelaunch – Tether satellite missions
This is the second part to the article about tether propulsion. It will focus on space missions that tested tethers in space. The first such mission took place in 1966. Gemini 11 deployed a 30m tether connecting it to the Agena target vehicle. It created a small amount of artificial gravity (0.00015 g) by spinning the two spacecraft.
Astronomy Picture of the Week – Solar Eruption
This is a fairly old picture of the Sun since it has been taken on September 14, 1997 by the space-based SOHO observatory. It represents a massive solar eruption. Such a phenomenon occurs when magnetic fields arching from the solar surface twist and trap ionized gas, suspending it in huge looping structures, often expelling it into space. Occasionally that huge amount of solar plasma is ejected in the direction of Earth.
Astronomy Picture of the Week – Stone Mesas of the Cydonia Region on Mars
This photo of the unusual stone mesas of the Cydonia region on Mars was taken by the robotic spacecraft called Mars Express. It shows an area about 90 kilometers wide. What most people don't know is that the region in the far lower right of this photo is the same region in which the Viking orbiter saw a human face in 1976.