Red Giant Star

• 

  NASA Spots Starquakes in a Red Giant Orbiting One of the Galaxy’s Quietest Black Holes

  A red giant star orbiting a quiet black hole spins faster than expected, while internal vibrations reveal it is younger than its ancient chemistry suggests. These findings hint at a past stellar merger and challenge existing models of star evolution in low-metal environments. Future observations aim to confirm its complex cosmic history.

• 

  NASA’s Nancy Grace Roman Space Telescope Surpassing Expectations Even Before Launch, Reveals Research

  NASA’s upcoming Roman Space Telescope is expected to measure seismic waves in over 300,000 red giant stars, far greater than early predictions. These signals will help scientists better understand exoplanet systems and the Milky Way’s ancient core. Researchers say Roman’s natural survey design enables this breakthrough even before the telesco...

• 

  Astronomers Record First-Ever Massive Stellar Blast Capable Of Stripping Planetary Atmospheres

  This event originated from a red dwarf star, which is much dimmer, cooler, and smaller than the Sun.

• 

  NASA's Astronomers Reveal Red Giant Stars May Destroy Their Own Planets

  This extreme expansion poses a serious threat to nearby planets. For example, when the Sun becomes a red giant in about 5 billion years, it will likely swallow Mercury and Venus.

• 

  Tiny Red Dots Spotted By NASA’s James Webb Telescope Could Be Black Hole Stars

  NASA’s James Webb Space Telescope revealed mysterious “little red dots” that seem too bright and mature for their age. A new study suggests they may be black hole stars—giant hydrogen spheres powered by black holes—helping explain the rapid growth of early supermassive black holes.

• 

  Young Exoplanet Spotted Shedding Atmosphere Under Stellar Radiation

  NASA’s Chandra X-ray Observatory and Hubble Space Telescope have captured a dramatic cosmic event: a baby exoplanet, TOI 1227 b, is being stripped of its atmosphere by powerful X-rays from its host star. Only 8 million years old and orbiting a red dwarf, this Jupiter-sized planet is losing gas at a rate equal to Earth’s entire atmosphere every ...

• 

  When The Sun Dies: What It Means For Earth

  The eventual death of the Sun might prompt humanity to search for new homes in other star systems.

• 

  Discovery Of Small Star Giving Birth To Huge Planet Leaves Scientists Puzzled

  TOI-6894 is roughly 240 light-years from Earth in the constellation Leo and is the smallest-known star to host a large planet.

• 

  Europa Could Briefly Sustain Life When the Sun Becomes a Red Giant Star, Scientists Say

  Scientists at Cornell’s Carl Sagan Institute propose that Jupiter’s moon Europa could host life for up to 200 million years during the sun’s red giant phase. While Earth would be incinerated, Europa’s subsurface oceans might temporarily support microbial life, offering a final refuge in the solar system and expanding the search for biosigna...

• 

  T Corona Borealis May Erupt Soon: Rare Nova Could Be Visible to Naked Eye

  T Corona Borealis, a binary star system in the Northern Crown constellation, is showing signs of an imminent nova eruption. The white dwarf star, which pulls material from its red giant companion, last erupted in 1946. Astronomers have detected patterns similar to previous eruptions, leading to predictions of a possible outburst within the next two...