cosmology articles
Are all galaxies moving apart?
The simple answer to whether all galaxies are moving apart is a definitive no, although the vast majority are receding f...
Are there any dead galaxies?
The universe is filled with magnificent, churning cosmic factories—galaxies actively forming billions of new stars—but a...
How did Galileo's discovery of the Galilean moons of Jupiter impact our understanding of the universe?
The initial flicker of light Galileo Galilei noticed in January of 1610, when pointing his newly improved telescope towa...
What happens if the universe expands too fast?
The universe isn't just getting bigger; it’s stretching at an ever-increasing rate, a phenomenon that has left cosmologi...
What will happen if two galaxies collide?
When two galaxies meet, the event is less of a violent crash and more of a slow, stately cosmic dance that spans hundred...
How fast is our Galaxy cluster moving?
The cosmos is a place defined by motion. For us living on Earth, accustomed to the comforting stability of our surroundi...
What were stars before they were stars?
The material that eventually ignited to become the universe’s first stars existed in a state profoundly different from t...
What came before the stars?
The grand cosmic tapestry we observe today, peppered with countless galaxies, nebulae, and the familiar glow of establis...
What was before the stars?
The universe, in its infancy, was a place vastly different from the star-studded expanse we observe tonight. Before the ...
Why is hydrogen so important to the universe?
The initial appearance of hydrogen, the simplest of all elements, sets the stage for everything that has ever been obser...
What is the largest structure in the hierarchy of the universe?
The grand architecture of the cosmos is arranged in a pattern far grander than any human-made city or nation; it is a va...
What are the biggest structured things in space called?
When we look up at the night sky, it seems like the stars and galaxies are scattered randomly, a beautiful, chaotic spra...
What is the large scale structure (LSS)?
The universe on the largest observable scales is far from uniform; instead, matter is arranged in a distinct, interconne...
Is the universe red-shifted?
The light reaching us from distant galaxies carries an unmistakable signature written into its very fabric, a clue that ...
Is the universe experiencing red shift or blue shift?
The light from the overwhelming majority of objects in the cosmos arrives stretched, meaning the universe, on its grande...