Interstellar visitor may have altered planetary orbits in Solar System, say scientists
A group of scientists has proposed that a massive interstellar object, potentially eight times the size of Jupiter, might have dramatically influenced the orbits of planets in our solar system. The study, currently published on the arXiv preprint database but not yet peer-reviewed, suggests that this celestial intruder passed close to where Mars orbits today, reshaping the paths of Jupiter, Saturn, Uranus, and Neptune.
For years, researchers have noted a discrepancy between the ideal concentric, planar arrangement of planetary orbits and their current three-dimensional orientations. To investigate, the team hypothesized that approximately four billion years ago, a star-sized object entered our solar system. They conducted 50,000 simulations over 20 million years, varying the visitor's mass, velocity, and proximity to the Sun.
Their findings indicate that in about 1% of scenarios, the object's gravitational influence could explain the current orbital patterns of the planets. According to the simulations, the interstellar visitor may have approached within 1.69 astronomical units (AU) of the Sun—just beyond Mars' present orbit. Such proximity would have allowed its gravity to nudge the planets into new trajectories.
While previous theories attributed these irregularities to interactions among the planets themselves, this study posits that a one-time interstellar event may provide a more plausible explanation. The researchers also called for further investigation into the potential effects of such an encounter on minor planets in the asteroid belt and the trans-Neptunian region.
"We estimate that there is about a 1-in-100 chance that such a flyby produces a dynamical architecture similar to that of the solar system," the researchers stated, adding that this encounter could account for the moderate eccentricities and inclinations observed in planetary orbits.
Let the Truth be known. If you read VB and like VB, please be a VB Supporter and Help us deliver the Truth to one and all.
Punjab Police cops withdrawn from Kejriwal's security
Chandigarh, Jan 23 (PTI): Punjab Police personnel deployed in the security of Aam Aadmi Party national convener Arvind Kejriwal have been withdrawn, the state police chief said on Thursday.
"Time to time, we get reports of threats to chief minister Bhagwant Mann and Arvind Kejriwal and we share them with the concerned agencies.
"Following the directions of the Delhi police and the Election Commission today, we withdrew the component of the Punjab police in the security of Kejriwal ji," Director General of Police Gaurav Yadav told reporters in Patiala.
"We showed our concerns to them. We will remain in touch with them. We will share our inputs with the Delhi police," he said.
The development comes ahead of the elections for the 70-member Delhi Assembly on February 5. The poll results are set to be declared on February 8.
