Thanks to the Hubble Space Telescope, we have seen nebula like never before. But are they really as colourful as Hubble makes out?

What makes a planet a planet? And what makes a star a star? Once we know this these defining characteristics, we start to notice that these definitions can overlap. Which begs the question, can a planet be bigger than its parent star?

Sonification transforms scientific data, such as space imagery, into sound, providing an auditory perspective on celestial phenomena. By translating features like stars, gas, and dust into musical tones, this process enables a unique way...

Astrum investigates some examples of the longest and shortest years that we know of. The differences are mind-boggling!

What makes a planet a planet? And what makes a star a star? Once we know this these defining characteristics, we start to notice that these definitions can overlap. Which begs the question, can a planet be bigger than its parent star?

How big do you think our solar system is? Up until Pluto? A bit beyond? How big can other solar systems get? Astrum answers!

How can scientists possibly know the age of the universe? Well, through a variety of factors, including redshift, the CMBR and more.

Gravitational microlensing events are revealing the mysteries of rogue planets, but what are they, and how does it work? And what role does the Nancy Grace Roman Space Telescope play in helping us spot more rogue planets in the future?

Galaxies are not spinning tops. So how do stars move within them?

There is an exoplanet, discovered by ESO's VLT, where it rains iron. But WASP-67b is 690 light years away, how could we possibly know that?

Scientists can't use tape measures, rulers or lasers to measure the astronomical distances to stars and galaxies, so how do we do it?

Can planets exist in multi-star systems, and what would that look like from their perspective?

How much of an effect would a second Sun have on Earth? Is there a way it could work?

A black body is a theoretical or imaginary object that perfectly absorbs all incoming electromagnetic radiation, and also emits radiation, like heat and visible light, based on its temperature. A black body is considered theoretical...

Multiverse theory suggests that our universe, which consists of billions and billions of planets, stars and galaxies and extends out tens of billions of light-years, may not be the only universe that exists. There could be another...

Dark matter is an invisible matter that occupies more than half of the space of the observable universe but cannot be detected directly as it doesn’t interact with electromagnetic radiation, like visible light and gamma rays. One of the...

Space is full of radio waves, plasma waves, magnetic waves, gravitational waves, and shock waves, all of which can travel in space without a medium. These waves are recorded by instruments that can sense these waves, and the data is...

Yes, fire can burn without oxygen. While oxygen is an important oxidizing agent for combustion, it is not the only one. There are alternative oxidizers such as chlorine, fluorine, and bromine that can also support burning. Furthermore,...

Space is filled with countless stars, all of which radiate enormous amounts of heat. These stars are tens of thousands of times bigger than our own sun. Still, space is considered to be cold. Why is that? If there are so many hot burning...

Although stars are visible in space, pictures of celestial bodies taken from satellites by astronauts do not show any stars in the background. This is because the stars are very far away and, therefore, appear incredibly dim in contrast...

While flying over a metropolitan or densely populated area at night, its likely that you wont see stars from the airplane window. This is because the excessive artificial lighting (i.e., light pollution) of the city can light up the sky...

If you are still living under the assumption that the moon can only be seen in the night sky, you’re incorrect! The fact is that the moon is always hanging around our planet; sometimes, it’s visible during the day (given you have the...

If you travel at the speed of light, your mass will increase exponentially. The speed of light is 300,000 kilometers per second (186,000 miles per second). When you move at this speed, your mass will become infinite. Therefore, infinite...

There are many planets in the universe, but very few of them have qualities to support life Taking one celestial body at a time and determining whether it supports life would be slow and inefficient. So, astronomers look for certain...