NASA discovers Mercury is 'under steady siege' from meteor showers


NASA's Messenger spacecraft has discovered what may be a recurring meteor shower on Mercury.
The spacecraft found a "halo of gases" in Mercury's exosphere, Phys.org reports. Scientists suspect the meteor shower may be associated with the Comet Encke, which also causes several yearly events on Earth.
The Messenger spacecraft observed seasonal calcium surges regularly over a 9-year period, suggesting a periodic meteor shower. The scientists reported that the amount of interplanetary dust on Mercury is abnormally high, and it may have come from a cometary debris field.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
NASA scientists noted that the potential discovery is important because Mercury's environment hasn't been explored to much extent.
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Meghan DeMaria is a staff writer at TheWeek.com. She has previously worked for USA Today and Marie Claire.
-
Some mainstream Democrats struggle with Zohran Mamdani's surprise win
TALKING POINT To embrace or not embrace? A party in transition grapples with a rising star ready to buck political norms and energize a new generation.
-
How to make music part of your vacation
Let the rhythm move you
-
What is credit card churning and why is it risky?
the explainer Churners frequently open new credit cards with the intent of earning a welcome bonus and accessing other perks
-
New York plans first nuclear plant in 36 years
Speed Read The plant, to be constructed somewhere in upstate New York, will produce enough energy to power a million homes
-
Dehorning rhinos sharply cuts poaching, study finds
Speed Read The painless procedure may be an effective way to reduce the widespread poaching of rhinoceroses
-
Breakthrough gene-editing treatment saves baby
speed read KJ Muldoon was healed from a rare genetic condition
-
Sea lion proves animals can keep a beat
speed read A sea lion named Ronan beat a group of college students in a rhythmic dance-off, says new study
-
Humans heal much slower than other mammals
Speed Read Slower healing may have been an evolutionary trade-off when we shed fur for sweat glands
-
Novel 'bone collector' caterpillar wears its prey
Speed Read Hawaiian scientists discover a carnivorous caterpillar that decorates its shell with the body parts of dead insects
-
Scientists find hint of alien life on distant world
Speed Read NASA's James Webb Space Telescope has detected a possible signature of life on planet K2-18b
-
Katy Perry, Gayle King visit space on Bezos rocket
Speed Read Six well-known women went into lower orbit for 11 minutes