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- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
In addition, the team aimed to estimate unknown details about the asteroid and the surrounding area.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
“Then what we did is check which of the simulation run outcomes most closely match observed reality,” Raducan said.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
She added that results of the research provided clear evidence that the crash turned Dimorphos into a relatively weak rubble pile asteroid.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
Raducan explained this meant that the object is currently being held together “by the asteroid’s extremely weak gravity” rather than a solid and strong mass.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
The researchers noted that the results of the simulation and the team’s examinations partly explain why the crash was so effective in changing the path of the
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
Raducan said the results also persuaded the team that “the likelihood is that the crater grew to encompass the entire body itself, so that Dimorphos ended up
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
being completely reshaped.” It is therefore unlikely that a crater still exists after the crash.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
The researchers said the existence of a crater can be investigated further by a European Space Agency (ESA) spacecraft.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
The spacecraft, called Hera, is preparing for a possible launch in October.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
ESA says Hera’s cameras and instruments will carry out detailed studies of Dimorphos and the asteroid it orbits, Didymos.
- Public domaingeneral-american
Study: NASA Space Strike Might Have Reshaped an Asteroid
During the operation, the spacecraft will aim to collect the most data yet on such an asteroid system. I’m Bryan Lynn.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Scientists say they have discovered new evidence that cloud activity on Neptune is linked to atmospheric changes on the planet caused by the
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
sun. Researchers say the evidence is based on observations collected by several telescopes over a period of nearly 30 years.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Data was collected by the Hubble Space Telescope operated by the American space agency NASA as well as the W.M.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Keck Observatory in Hawaii and the Lick Observatory in California. Astronomers recorded atmospheric changes on Neptune as they examined the cloud data.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
The researchers found that the changes followed the sun’s natural cycle.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Each natural cycle known as the solar cycle, lasts about 11 years. During this cycle, the sun’s magnetic field completely flips
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
This means the sun’s north and south magnetic poles change places. They then flip back after another 11 years.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Before the flip, a major increase in solar activity happens. This can send powerful collections of solar particles shooting through space.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
The scientists who examined the telescope data said they found that Neptune appeared brightest in 2002, then dimmed in 2007.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
The planet became bright again in 2015, but then darkened in 2020 to the dimmest level ever observed.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
The team said the observations also showed Neptune lost nearly all of its clouds beginning in 2019.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Astronomers at the University of California, Berkeley (UC Berkeley) led the research. They recently reported their findings in a study in the publication Icarus
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
Imke de Pater is a retired professor of astronomy at UC Berkeley and was the lead writer of the study.
- Public domaingeneral-american
Study: Neptune’s Disappearing Clouds Linked to Solar Cycle
She said in a statement she was surprised by how quickly clouds disappeared on Neptune. She noted cloud activity had dropped sharply “within a few months.”
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