What Happens if an Asteroid Is Heading Toward Earth? Detection, Risk, and Deflection Explained
Learn how astronomers detect asteroid threats, assess impact risk, and prepare deflection missions before a dangerous object reaches Earth.
What Is a Robotic Arm in Space? Definition, Uses, and How It Works
Learn what a robotic arm in space is, how it operates, and why it is essential for satellites, space stations, and exploration missions.
How Does NASA Detect Dangerous Asteroids? Tracking Near-Earth Objects in 2026
Learn how NASA finds risky asteroids, predicts impact threats, and turns sky surveys into early warnings.
How Big Would an Asteroid Need to Be Dangerous?
Learn the asteroid sizes that can threaten people, cities, and civilization, plus what scientists consider dangerous.
Why Does the Sun Shine? The Science of Our Star’s Light and Heat
Learn why the Sun shines, how nuclear fusion powers it, and what makes its energy essential to life on Earth.
FU Orionis Star Outburst – Definition & Detailed Explanation – Astronomical Phenomena Glossary
I. What is FU Orionis Star Outburst? FU Orionis (FU Ori) is a type of variable star that experiences sudden and dramatic increases in brightness. These outbursts can last for several years before the star returns to its normal state. FU Orionis stars are young, pre-main sequence stars that are still in the process of … Read more
Protostar – Definition & Detailed Explanation – Astronomical Objects Glossary
What is a Protostar? A protostar is a stage in the formation of a star where a dense cloud of gas and dust begins to collapse under its own gravity. This collapse triggers the process of nuclear fusion, which eventually leads to the birth of a new star. Protostars are considered to be in their … Read more
Kerolox (Kerosene and Liquid Oxygen) – Definition & Detailed Explanation – Rocketry & Propulsion Glossary
What is Kerolox? Kerolox is a type of rocket propellant that consists of a combination of refined kerosene (RP-1) and liquid oxygen (LOX). The name “Kerolox” is derived from the words “kerosene” and “liquid oxygen.” This propellant mixture is commonly used in rocket engines due to its high energy density and relatively low cost compared … Read more
Geomagnetic Storms – Definition & Detailed Explanation – Space Weather Glossary
I. What are Geomagnetic Storms? Geomagnetic storms are disturbances in Earth’s magnetic field caused by solar wind interacting with the planet’s magnetosphere. These storms can result in a variety of effects on Earth, including disruptions to technology, communication systems, and even power grids. Geomagnetic storms are typically triggered by solar activity, such as solar flares … Read more
Aerojet Rocketdyne – Definition & Detailed Explanation – Rocketry & Propulsion Glossary
I. What is Aerojet Rocketdyne? Aerojet Rocketdyne is a leading aerospace and defense company that specializes in rocket propulsion systems. With a history dating back to the early days of the space race, Aerojet Rocketdyne has established itself as a key player in the field of rocketry and propulsion. The company’s expertise and innovative technologies … Read more