NASA’s Perseverance Mars rover has made what could be its most astonishing discovery to date: possible signs of ancient life on the Red Planet.
The six-wheeled robotic explorer came across an intriguing, arrow-shaped rock dubbed “Cheyava Falls” that might harbor fossilized microbes from billions of years ago, when Mars was a watery world.
Perseverance on Sunday last week drilled into the enigmatic rock to collect a core sample, as it traversed Neretva Vallis, an ancient river valley. The samples carefully stowed beneath the rover’s belly are destined to eventually return to Earth, where they would undergo more comprehensive analysis.
Photo: AFP / NASA / JPL-Caltech / ASU
“Cheyava Falls is the most puzzling, complex and potentially important rock yet investigated by Perseverance,” project scientist and California Institute of Technology professor Ken Farley said on Thursday.
Three compelling clues have scientists buzzing. White calcium sulfate veins run the length of the rock, a telltale sign that water once flowed through it.
Between the veins is a reddish middle area, teeming with organic compounds, as detected by the rover’s Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals instrument.
Tiny off-white splotches ringed with black, reminiscent of leopard spots, contain chemicals that suggest energy sources for ancient microbes, according to scans by the Planetary Instrument for X-ray Lithochemistry instrument.
“On Earth, these types of features in rocks are often associated with the fossilized record of microbes living in the subsurface,” said David Flannery, an astrobiologist and member of the Perseverance science team from the Queensland University of Technology in Brisbane, Australia.
The quest to confirm ancient Martian life is far from over. The real test would come when Perseverance’s precious rock samples are returned to Earth as part of the Mars Sample Return Program, a collaboration between NASA and the European Space Agency slated for the 2030s.
While there are alternative explanations for the findings that do not involve microbes, there is a tantalizing chance that Perseverance’s core sample might contain actual fossilized microbes — potentially making history as the first proof of life beyond Earth.
“We have zapped that rock with lasers and X-rays and imaged it literally day and night from just about every angle imaginable,” Farley said. “Scientifically, Perseverance has nothing more to give. To fully understand what really happened in that Martian river valley at Jezero Crater billions of years ago, we’d want to bring the Cheyava Falls sample back to Earth, so it can be studied with the powerful instruments available in laboratories.”
Former Nicaraguan president Violeta Chamorro, who brought peace to Nicaragua after years of war and was the first woman elected president in the Americas, died on Saturday at the age of 95, her family said. Chamorro, who ruled the poor Central American country from 1990 to 1997, “died in peace, surrounded by the affection and love of her children,” said a statement issued by her four children. As president, Chamorro ended a civil war that had raged for much of the 1980s as US-backed rebels known as the “Contras” fought the leftist Sandinista government. That conflict made Nicaragua one of
COMPETITION: The US and Russia make up about 90 percent of the world stockpile and are adding new versions, while China’s nuclear force is steadily rising, SIPRI said Most of the world’s nuclear-armed states continued to modernize their arsenals last year, setting the stage for a new nuclear arms race, the Stockholm International Peace Research Institute (SIPRI) said yesterday. Nuclear powers including the US and Russia — which account for about 90 percent of the world’s stockpile — had spent time last year “upgrading existing weapons and adding newer versions,” researchers said. Since the end of the Cold War, old warheads have generally been dismantled quicker than new ones have been deployed, resulting in a decrease in the overall number of warheads. However, SIPRI said that the trend was likely
BOMBARDMENT: Moscow sent more than 440 drones and 32 missiles, Volodymyr Zelenskiy said, in ‘one of the most terrifying strikes’ on the capital in recent months A nighttime Russian missile and drone bombardment of Ukraine killed at least 15 people and injured 116 while they slept in their homes, local officials said yesterday, with the main barrage centering on the capital, Kyiv. Kyiv City Military Administration head Tymur Tkachenko said 14 people were killed and 99 were injured as explosions echoed across the city for hours during the night. The bombardment demolished a nine-story residential building, destroying dozens of apartments. Emergency workers were at the scene to rescue people from under the rubble. Russia flung more than 440 drones and 32 missiles at Ukraine, Ukrainian President Volodymyr Zelenskiy
Indonesia’s Mount Lewotobi Laki-Laki yesterday erupted again with giant ash and smoke plumes after forcing evacuations of villages and flight cancelations, including to and from the resort island of Bali. Several eruptions sent ash up to 5km into the sky on Tuesday evening to yesterday afternoon. An eruption on Tuesday afternoon sent thick, gray clouds 10km into the sky that expanded into a mushroom-shaped ash cloud visible as much as 150km kilometers away. The eruption alert was raised on Tuesday to the highest level and the danger zone where people are recommended to leave was expanded to 8km from the crater. Officers also
RSS