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From the discovery of alien worlds and the creation and evolution of galaxies to the reality of a dark side to the universe, cosmic interactions have been the golden key for unlocking many secrets about the universe. Through different examples, this article highlights how interactions between objects of outer space have constantly fulfilled our longing to make sense of the world around us.
 
Are all that children surmise from their day-to-day experiences, actual scientific truth? In this article, we discuss three  examples that show how children have such 'prior mental models' before they enter classrooms, and how these could persist, even into adulthood. We also discuss potential ways to help learners replace these 'prior mental models' with correct scientific models.
 
Introduction
Who were the first people to think of the concept of atomic weights? How were atomic weights of elements first calculated? In this article, the authors explore the long scientific journey from the origins of the widely used conceptual framework of atomic weights to the debates on the topic prevalent even today. 
 
Introduction
This article in an interview with Dr. Satish Khurana, who is currently working as a Research Associate at University of Leuven, Belgium. His research interests include exploring intrinsic and extrinsic (HSC "niche") factors regulating hematopoietic stem cell (HSCs) function, HSC homing, proliferation and ageing. Before this, Dr. Khurana was completing his doctoral work, also on HSC’s, from the National Institute of Immunology, New Delhi, India.
 
Are shadows completely dark? Are there some shadows that are darker than others? What do a mobile phone camera and the human eye have in common? Are there any natural pin-hole cameras? How many mirrors do we need to see our right hand appear as it would to others? In this article, the author explores many simple ways in which the teaching of light can link everyday observations to concepts using shadows and reflections.
 
Introduction 
What made J.B.S. Haldane one of the most respected scientists of the 20th century? At the same time, why was he called a ‘great rascal of science’? What are his contributions to science and what kind of a person was he? This article takes us through the remarkable life of one of the most interesting and accomplished scientists of the 20th century.
It was a proud moment for India, when the Indian Space Research Organisation launched the Mars Orbiter Mission (MOM), the first one ever to successfully position a satellite in an orbit around Mars. Why Mars? What makes this planet more special than our other neighbours in the solar system? What do we hope to learn from exploring another planet? This article  explores some of these questions on interplanetary explorations, while also building an understanding of space science in practice.
 
The human body is an eternal battleground. We are constantly meeting with invaders of all kinds and all sizes. Did you know that our bodies have private armies that fight against disease? What are the different units in this army? How do they function? How do they get to the frontline almost  instantaneously? These questions and many more are answered in this first-hand account by a soldier (cell) in the human immune system.
 

Understanding nature of science is, now, widely perceived to be a vital learning outcome of science education. In this article, we briefly discuss the rationale for introducing ‘nature of science’ in school science curricula, its evolving perspectives, and the approaches we may adopt to enable the learning of this topic.

Introduction

Growing sufficient quantities of the various crops needed to feed an everincreasing population is a challenge faced by many countries - particularly, developing and under-developed countries. The availability of fertile land, suitable climatic conditions, and good agricultural practices; combined with a variety of inputs such as high yielding seeds, fertilizers, pest control agents, irrigation etc., play vital roles in this respect.

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