The Spectacular Veil Nebula Gerd DaniMarch 30, 2021March 28, 20260 This Picture of the Week revisits the Veil Nebula, a popular subject for Hubble images! This object was featured in… Read More
What is A gravitational lens? Gerd DaniMarch 30, 2021March 28, 20260 A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and… Read More
A Supernova Explosion And The Evolution Of A Supernova Remnant Gerd DaniMarch 28, 2021March 28, 20260 Supernova remnants (SNR) are one of the four categories of nebulae that may exist in a Galaxy (the other three… Read More
The strange case of Comet Holmet Gerd DaniMarch 27, 2021March 28, 20260 Could the comet of a comet expand so much to become bigger than the Sun? Surprisingly yes, and this is… Read More
Comet Impact Enables Probe of Jupiter’s Winds Gerd DaniMarch 25, 2021March 28, 20260 Scientists at the European Southern Observatory are describing newly observed wind processes on Jupiter as “a unique meteorological beast.” I… Read More
BINARY BLACK HOLE Gerd DaniMarch 25, 2021March 28, 20260 A binary black hole is a system consisting of two black holes in close orbit around each other. Like black… Read More
New data challenges the long-held theory that all of Mars’s water escaped into space Gerd DaniMarch 25, 2021March 28, 20260 Billions of years ago, the Red Planet was far more blue; according to evidence still found on the surface, abundant… Read More
Comet Galaxy Gerd DaniMarch 24, 2021March 28, 20260 The Comet Galaxy, a spiral galaxy located 3.2 billion light-years from Earth, in the galaxy cluster Abell 2667, was found… Read More
Star Formation – Part II Gerd DaniMarch 24, 2021March 28, 20260 On the first part we saw some basic historic concepts about star formation (i.e. Jeans mass). We then went through… Read More
Copeland’s Septet Gerd DaniMarch 23, 2021March 28, 20260 Copeland’s Septet (also known as Arp 320, VV 282, and Hickson Compact group 57) is a group of galaxies, located… Read More