Tag: Cosmic Expansion
-
Scientists Edge Closer to Unveiling Universe’s Secrets
A Sliver of the Cosmos: Why What We See Matters When we look up at the night sky, we glimpse only a fraction of the cosmic story. Ordinary matter—the stars, planets, and gas we can observe—accounts for roughly 5% of the universe. The remaining 95% is thought to be composed of dark matter and dark…
-
Unveiling the Universe’s Secrets: Dark Matter & Energy
Introduction: A Sliver of the Cosmos, A Quest for the Whole Picture When we peer into the night sky, the visible stars and galaxies feel like a complete map. Yet modern cosmology tells a different story: the ordinary matter that forms planets, oceans, and life accounts for only a fraction of the universe. The vast…
-
Remarkable study challenges the idea of an accelerating universe using Type Ia supernovae
Unraveling the cosmos: a fresh look at expansion For decades, astronomers have relied on Type Ia supernovae as bright, dependable beacons to map the expansion of the universe. These stellar explosions serve as cosmic standard candles, allowing scientists to measure how fast galaxies are moving away from us. A cornerstone of modern cosmology has been…
-
Remarkable study finds no evidence of an accelerating universe
Rethinking the Expansion: A Fresh Look at Type Ia Supernovae For decades, astronomers have relied on Type Ia supernovae as cosmic mileposts to measure the universe’s expansion. These stellar explosions, occurring in binary systems where a white dwarf accretes matter from a companion star, shine with remarkable regularity. That consistency makes them excellent standard candles:…
-
Why Scientists Use a Funnel to Illustrate the Big Bang
Not a Shape: The Funnel as a Timeline When scientists depict the Big Bang with a funnel, they aren’t claiming the universe looks like a cone. The funnel is a tool to visualize a timeline, showing how the cosmos has stretched, cooled, and accelerated across 13.8 billion years. The narrow end marks the universe’s earliest…
-
IUCAA Researchers Measure Universe’s Expansion Using Mira Stars
In a groundbreaking discovery, researchers at the Inter-University Centre for Astronomy and Astrophysics (IUCAA) in Pune have unveiled a novel method to measure the universe’s expansion rate through the observation of Mira stars. These remarkable stars, known for their pulsating nature, are providing astronomers with invaluable data to address one of the most profound questions…