Skip to content
Sentinel Mission
  • Blog
  • About
  • Contact
  • Buying Guides
  • Astronomy Glossaries
    • Astrobiology Glossary
    • Astrochemistry Glossary
    • Astronomical History & Mythology Glossary
    • Astronomical Objects Glossary
    • Astronomical Phenomena Glossary
    • Astronomical Units & Measurements Glossary
    • Astrophysics Glossary
    • Cosmology Glossary
    • Planetary Science Glossary
    • Rocketry & Propulsion Glossary
    • Space Exploration Glossary
    • Space Weather Glossary
    • Telescopes & Observatories Glossary

How Does Space Junk Happen? Causes, Risks, and What Happens Next

July 23, 2026 by tinelmis

Learn how space junk forms, why it keeps growing, and which technologies may reduce orbital debris.

Space Shuttle Challenger – Definition & Detailed Explanation – Space Exploration Glossary

July 23, 2026 by tinelmis

I. What was the Space Shuttle Challenger? The Space Shuttle Challenger was a spacecraft operated by NASA as part of its Space Shuttle program. It was the second orbiter to join the fleet and was named after the British naval research vessel HMS Challenger, which sailed the Atlantic and Pacific oceans during the 1870s. The … Read more

Why Do Solar Storms Cause Auroras? The Science Behind Earth’s Northern and Southern Lights

July 23, 2026 by tinelmis

Learn how solar storms trigger auroras, from the Sun’s charged particles to Earth’s magnetic field and glowing upper atmosphere.

How Do Satellites Monitor Earth? Methods, Sensors, and Real-World Uses in 2026

July 23, 2026 by tinelmis

Learn how satellites monitor Earth using imaging, radar, climate sensors, and data networks that track change across land, oceans, and atmosphere.

How Do Satellites Help the Internet? A Clear Guide to Space-Based Connectivity in 2026

July 23, 2026 by tinelmis

Learn how satellites extend internet access, support remote areas, and keep global networks connected with fast, resilient links.

Microlensing Magnification – Definition & Detailed Explanation – Astronomical Units & Measurements Glossary

July 23, 2026 by tinelmis

I. What is Microlensing Magnification? Microlensing magnification is a phenomenon in astrophysics where the gravitational field of a massive object, such as a star or planet, acts as a lens to magnify the light from a background source. This effect occurs when the massive object passes between the observer and the background source, causing the … Read more

Why Do Solar Storms Happen? The Science Behind Space Weather and Its Impacts

July 23, 2026 by tinelmis

Learn why solar storms happen, what triggers them on the Sun, and how they can affect satellites, power grids, and communications.

How Are Satellites Launched? A Clear Guide to Rocket Launches, Orbits, and Deployment

July 23, 2026 by tinelmis

Learn how satellites are launched, from rocket lift-off to orbit insertion, deployment, and mission operations.

Why Are There So Many Satellites Now? The Real Reasons Behind the Rapid Rise in Orbit (2026)

July 23, 2026 by tinelmis

Explore why satellites have surged in number, from cheaper launches and mega-constellations to broadband demand, defense needs, and space policy.

Lyman-alpha Forest – Definition & Detailed Explanation – Astronomical Phenomena Glossary

July 23, 2026 by tinelmis

I. What is Lyman-alpha Forest? The Lyman-alpha Forest is a term used in astrophysics to describe a series of absorption lines in the spectra of distant quasars caused by intervening clouds of neutral hydrogen gas. These absorption lines appear as a forest of lines in the ultraviolet region of the electromagnetic spectrum, specifically around the … Read more

Older posts
Newer posts
← Previous Page1 … Page635 Page636 Page637 … Page1,017 Next →

SentinelMission.org

Hundreds of articles about space, astronauts, guides and free resources

This post may contain affiliate links so we may receive compensation if you sign up for or purchase products linked to below. As an Amazon Associate, I can earn from qualifying purchases.

Articles

Space
Astronauts

Company

About
Contact Us
Write For Us

Email: admin@goldenrod-trout-242140.hostingersite.com

Follow Us!


Copyright © 2026 All Rights Reserved

Privacy policy

Cookie Policy