What is Luminosity? Luminosity refers to the total amount of energy produced by different celestial bodies(stars, galaxy) per unit time and it is basically measured in joules per second or watts in SI units. We can define luminosity as: The absolute…
Stars go through a natural cycle, much like any living beings. This cycle begins with birth, expands through a lifespan characterized by change and growth, and ultimately leads to death. The time frame in the life cycle of stars is…
Halley’s Comet Halley’s comet is arguably the most famous of all comets. It is a periodic comet that returns to Earth every 75 years. The last time it was here was in 1986, and it is projected to return in…
What is a Galaxy? A galaxy is a sprawling space system which is composed of stars, dust, interstellar gas, stellar remnants, and dark matter and all held together by gravity. The word ‘Galaxy’ is termed from the Greek word ‘galaxies‘.…
The earth, along with the other planets, revolves around the sun in its orbit. In turn, the moon revolves around the earth in the moon’s orbit. There comes a time when the three heavenly bodies get aligned in the same…
Dwarf Planets Learning the solar system used to be a simple thing because all that mattered was the sun and the nine planets. The mnemonic My Very Educated Mother Just Served Us Nine Pizzas kept things straight. Things got complicated when Pluto was reclassified as a dwarf planet. Now,…
It is essential to know the key differences between Stars and Planets as they are both celestial bodies located in outer space. A star is a body that possesses a light that causes it to reflect the light independently. On the other…
An eclipse happens when one celestial body blocks another in the observer’s line of sight. Lunar and solar eclipses are events when the sun, moon, and earth are tandem. Here, in this article, let us look at the various differences between…
Ever saw a shooting star in the night sky and wondered how a star falls? Or is it a star or some other foreign body that we see flying down? What is this flashy object called? A meteor, an asteroid,…
The difference between solstice and equinox is provided below in tabular format. But before learning the difference, one must understand the basic concept of equinox and solstice. Equinox and Solstice Equinox refers to a day with an equal duration of day…