Our Planet – Page 9 – Nature Observer

Steve in the Night Sky

In recent years, scientists and skywatchers have discovered a mysterious atmospheric phenomenon known as STEVE (Strong Thermal Emission Velocity Enhancement). At first mistaken for a type of aurora, STEVE appears…

DeKa October 3, 2025

Be smart Our Planet

Cycles of Compression and Expansion of a Planet

Planets, including Earth, are not static objects. Over geological timescales, they undergo cycles of compression and expansion caused by internal and external processes. These cycles affect planetary structure, surface relief,…

DeKa October 3, 2025

Climate Environmental Hazards Our Planet

What Is a Mantle Plume?

A mantle plume is a column of hot, solid rock rising from deep within the Earth’s mantle toward the surface. Unlike processes driven by tectonic plates, mantle plumes originate from…

DeKa October 3, 2025

Climate Our Planet What if?

Antarctica Without Ice: What Would Happen?

Antarctica contains about 70% of the world’s fresh water, locked in its massive ice sheets. The ice is up to 4.8 km thick in some places. It reflects sunlight, regulates…

DeKa October 3, 2025

Our Planet Tech & Nature

Urbanization: How Cities Shape the Modern World

Urbanization is the process by which populations move from rural areas to cities, leading to the growth of urban settlements. Over the past century, it has become one of the…

DeKa October 1, 2025

Climate Nature Our Planet

The Benefits of Sunlight for Earth

Sunlight is the primary source of energy for almost all life on Earth. Through photosynthesis, plants convert sunlight into chemical energy, forming the base of the food chain. Without solar…

DeKa October 1, 2025

Climate Global Challenges Our Planet

The Weakening of Earth’s Magnetic Field Over the Last 50 Years and Its Consequences

The magnetic field of Earth is generated by the motion of molten iron and nickel in the outer core. This process, called the geodynamo, creates a protective shield around the…

DeKa October 1, 2025

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How the Relief of a Planet Is Formed

Relief refers to the variations in height and shape of the planet’s surface, including mountains, valleys, plains, and plateaus. On Earth, the relief is the result of a complex interaction…

DeKa October 1, 2025

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What Are Seismic Waves?

Seismic waves are vibrations that travel through Earth, usually generated by earthquakes, volcanic eruptions, explosions, or other strong disturbances. They carry energy away from the source of the event and…

DeKa September 30, 2025

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Geodynamics: The Forces Shaping Our Planet

Geodynamics is the study of physical processes and forces that govern the movement and deformation of Earth’s interior. It explains how heat, pressure, and material flows inside the planet drive…

DeKa September 30, 2025