Tag: Andromeda
-
Andromeda Quenching Satellites Before They Fall In
Introduction: A New Twist on Galaxy Growth For decades, astronomers have treated galaxy mergers as dramatic, defining moments in a galaxy’s life. The standard picture has been two or more systems meeting, merging, and leaving behind a larger, more massive structure with bursts of star formation. Yet new observations of the Andromeda Galaxy (M31) suggest…
-
Andromeda’s Quiet Quenching: How its Satellites Fade Before Infall
Overview: A New Twist on Galaxy Growth For decades, astronomers have tracked how giant galaxies grow by consuming smaller companions. The Milky Way’s ongoing serenade with the Large and Small Magellanic Clouds—evidenced by the Magellanic Stream of gas trailing behind—has long served as a cornerstone example. But recent observations of our neighboring Andromeda Galaxy (M31)…
-
Edwin Hubble and the Standard Candle That Revealed the Universe
The Night That Transformed Astronomy On the night of October 5–6, 1923, the Mount Wilson Observatory near Pasadena became the stage for a turning point in science. Edwin Hubble, peering through the 100-inch Hooker telescope, glimpsed a faint smudge of light that would unlock an enormous question about the cosmos. What began as a tentative…
-
Edwin Hubble and the Cepheid Breakthrough: Unveiling the Vastness of the Cosmos
Introduction: A Single Star’s Light Changes Our Worldview On the night of October 5–6, 1923, a star’s flicker would rewrite humanity’s sense of the cosmos. While peering through the 100-inch Hooker telescope at Mount Wilson Observatory near Pasadena, California, Edwin Hubble observed a faint smudge of light that would become a cornerstone of modern astronomy.…
-
Edwin Hubble and the Discovery That Expanded the Universe: The Cepheid Standard Candle
Opening the Cosmos to a Vast Scale On the night of October 5–6, 1923, a breakthrough quietly unfolded at Mount Wilson Observatory in California. A young astronomer, Edwin Hubble, was meticulously examining the faint light of a distant smudge with the towering 100-inch Hooker telescope. What began as a routine set of photographic plates would…