Nikk Ogasa

3 weeks ago | sciencenews.org | Nikk Ogasa

Seismic symphonies of minor earthquakes may affect grand movements on major faults. Small and distant earthquakes can disrupt the growth of slow-slip events — gradual fault movements that can release tremendous amounts of energy at gentle tempos, a new analysis of seismic data suggests. Reported in the May 16 Science Advances, the research shows that the more frequently small earthquakes occur near a fault’s slow-slip zone, the less synchronized the slipping becomes.

3 weeks ago | sciencenews.org | Nikk Ogasa

It may come down to a coin toss as to whether the Milky Way collides with the Andromeda Galaxy within 10 billion years. While scientists have previously reported that a convergence was certain, an analysis of the latest data suggests the odds are only about 50 percent, researchers report June 2 in Nature Astronomy. The Milky Way’s largest satellite system — the Large Magellanic Cloud — may be our galaxy’s saving grace, the study shows.

4 weeks ago | sciencenews.org | Nikk Ogasa

Things may be moving on Venus’ surface. In 1983, researchers discovered that the planet’s surface was speckled with strange, circular landforms. These rounded mountain belts, known as coronae, have no known Earthly counterparts, and they’ve remained enigmatic for decades. But hot plumes of rock upwelling from Venus’ mantle are shaping the mysterious landforms, a new analysis suggests.

1 month ago | sciencenews.org | Nikk Ogasa

On some Martian nights, a subtle, green glow hangs low in the sky, wreathing the horizon in every direction. A visible Martian aurora has finally been observed for the first time, researchers report May 14 in Science Advances. The observation, made March 18, 2024, by the Perseverance rover, is also the first of an aurora from the surface of a planet that isn’t Earth. Moreover, it suggests future astronauts may witness ethereal Martian auroras with their own eyes.

1 month ago | sciencenews.org | Nikk Ogasa

Sprinklings of life appear key to the recipe for rain. Lofted flecks of organic material like bacteria, pollen and fungal spores play a profound role in regulating rainfall patterns, a new study suggests. These bioparticles can make up a major portion of all the particles that can seed rain in the sky, and their levels fluctuate in a daily cycle, researchers report May 5 in npj Climate and Atmospheric Science.