Explaining The Universe on Instagram: "Scanning Tunneling Microscope (STM) imaging is a technique that allows scientists to see and study surfaces at the atomic scale by exploiting the principle of quantum tunneling. A sharp metallic tip is positioned extremely close to a conductive surface, and when a small voltage is applied, electrons tunnel between the tip and the surface, generating a measurable current. By scanning the tip across the surface and adjusting its height to maintain a constant

Explaining The Universe on Instagram: "Mars is the fourth planet from the Sun and is often called the “Red Planet” because of its iron oxide–rich soil, which gives it a rusty appearance. It’s about half the size of Earth, with weaker gravity (around 38% of Earth’s) and a thin atmosphere made mostly of carbon dioxide, which makes the surface cold and unable to support liquid water for long periods today. However, scientists have found evidence that rivers, lakes, and perhaps even oceans once exis