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This artist's rendering made available by NASA in July 2016 shows the mapping of the near-Earth asteroid Bennu by the OSIRIS-REx spacecraft. VOA

NASA’s plan to scoop up dirt and gravel from an asteroid has hit a snag, but scientists say they can overcome it.

The asteroid Bennu was thought to have wide, open areas suitable for the task. But a recently arrived spacecraft revealed the asteroid is covered with boulders and there don’t seem to be any big, flat spots that could be used to grab samples.


In a paper released Tuesday by the journal Nature, scientists say they plan to take a closer look at a few smaller areas that might work. They said sampling from those spots poses “a substantial challenge.”

“But I am confident this team is up to that substantial challenge,” the project’s lead scientist, Dante Lauretta, told reporters at a news conference Tuesday.

The spacecraft, called Osiris-Rex, is scheduled to descend close to the surface in the summer of 2020. It will extend a robot arm to pick up the sample, which will be returned to Earth in 2023. The spacecraft began orbiting Bennu at the end of last year, after spending two years chasing down the space rock.

When the mission was planned, scientists were aiming to take dirt and gravel from an area measuring at least 55 yards (50 meters) in diameter that was free of boulders or steep slopes, which would pose a hazard.

“It is a more rugged surface than we predicted,” said Lauretta, of the University of Arizona in Tucson and one of the paper’s authors. But he said he believed a sample could still be collected.

NASA project manager Rich Burns said a spot will be chosen this summer and the setback won’t delay the sampling.

Patrick Taylor, who studies asteroids at the Lunar and Planetary Institute in Houston but didn’t participate in the spacecraft mission, noted in a telephone interview that the spacecraft was evidently maneuvering more accurately and precisely than had been expected.

“That gives me confidence they will be able to attempt a sample acquisition,” he said.


This Nov. 16, 2018, image provide by NASA shows the asteroid Bennu. VOA

Also Read: To Ensure Transparency, WHO Panel Aims for Registry of All Human Gene-Editing Research

Bennu is 70 million miles (110 million kilometers) from Earth. It’s estimated to be just over 1,600 feet (500 meters) across and is the smallest celestial body ever orbited by a spacecraft.

A Japanese spacecraft, Hayabusa2, touched down on another asteroid in February, also on a mission to collect material. Japan managed to return some tiny particles in 2010 from its first asteroid mission. (VOA)


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The aim of the book is to teach children that families can exist in different forms, and show them how to accept the diversity in family backgrounds.

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Delhi-based author Pritisha Borthakur is set to release her new book, 'Puhor and Niyor's Mural of Family Stories'. The 1,404-word children's book was put together to address a new kind of societal debacle in the family system. The author says the aim is to teach children that families can exist in different forms, and show them how to accept the diversity in family backgrounds.

The author who named the book after her twin sons -- Puhor and Niyor -- is a parent who has seen and heard the tales of ridicule and discrimination suffered by many in India and beyond. She says the book is an artistic illustration for kids that details how different families can live and coexist. Whether it's children with two dads or two moms, children with a single dad or single mom, and even multiracial family units, Borthakur's book teaches love, understanding, and compassion towards unconventional families.

Beyond race, gender, color, and ethnicity which have formed the bases for discrimination since the beginning of time, this book aims to bring to light a largely ignored issue. For so long, single parents have been treated like a taboo without any attempt to understand their situations; no one really cares how or why one's marriage ended but just wants to treat single parents as villains simply for choosing happiness and loving their children.

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