Composite image of galaxy cluster MS 0735. Credits: NASA, ESA, CXC, STScI, and B. McNamara (University…
Category: Astro Blog
Astro Blog
Trans-Neptunian Objects: Our Solar System’s Periphery
Comparison of the largest Trans-Neptunian Objects (TNOs) including Pluto, Eris, Haumea, and Makemake. Credit: Lexicon. License:…
What Is the Hubble Volume?
A visualization of the observable universe. The inner blue ring indicates the approximate size of the…
A Close-Up Look at the Silver Sliver Galaxy
NGC 891 – the Silver Sliver Galaxy. Photo by amateur astronomer Hunter Wilson. License: CC BY-SA…
What’s the Difference Between LEO, MEO and GEO Satellites?
As of the beginning of 2023, nearly 15,000 satellites are orbiting our planet — more, since…
Stargazing Calendar for August 2023
The Pleiades will make an appulse with the Moon on August 9. Image by NASA, ESA, AURA/Caltech,…
Stargazing Calendar for September 2023
Comet Hartley 2 Deep Impact flyby. Image credit: NASA/JPL-Caltech/University of Maryland. This month, the night sky…
Why Do Scientists Want to Make a 3D Map of the World?
Humans have been creating maps since we started exploring the world, giving us the tools to…
Why Didn’t a Planet Form Where the Asteroid Belt Is Now Located?
Main asteroid belt in white, Trojan asteroids in green, Hilda asteroids in orange, near-Earth objects in…
How Is the Sunspot Cycle Directly Relevant to Us Here on Earth?
One of the largest sunspots ever recorded at 130,000 km wide on October 18, 2014. Ten…