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(CNN) -- Target's revamped loyalty program is ready for its nationwide debut.Target Circle will be available to shoppers in the United States beginning October 6. Program perks include earning 1% on Target purchases, personalized deals and early access to its sales. The launch follows an 18-month test in six cities that garnered 2 million members.The expansion of the loyalty program complements Target's branded credit card, Redcard, which only a quarter of its customers use. It also replaces Cartwheel, a separate discount program, in an attempt to offer a "more seamless, intuitive shopping experience."The program is free. Target will begin automatically enrolling members that have Target.com and Redcard accounts. To use it, customers can swipe a barcode from the Target app or provide their phone number at checkout.The company has said earlier this year that Target Circle also gives the company more data about shopping habits. For example, if Target knows a shopper frequently buys diapers and baby products, it could email the customer an offer for diapers."This will help Target build a more complete picture of shoppers," said Neil Saunders, managing director at GlobalData Retail previously told CNN Business. "It gives customers a little incentive to go to Target."Target is the latest retailer to revamp its loyalty program because retailers are recognizing that they need new perks to encourage them to keep returning.Macy's, Starbucks, H&M, Kohl's, Lululemon and J Crew either have launched new loyalty programs or significantly changed their existing programs within the past year.-- CNN Business' Nathaniel Meyersohn contributed to this report. 1679

(KGTV) - A man accused of leading police on a lengthy, high-speed pursuit in Oklahoma City Friday recorded the incident on Facebook Live.Sirens could be heard blaring in the background as the man drives the reportedly stolen truck. The man identified himself as the suspect in the chase, yelling, "I'm in a high-speed chase, bro!" out the window at another person.Watch the video below:At least three crashes were caused as a result of the hours-long chase, according to KOCO in Oklahoma.The chase began on Interstate 240 in southwest Oklahoma City and continued into Moore, OK. The truck lost its trailer while going through a field and at one point another vehicle tried to intervene, pulling alongside the truck and blocking it. RELATED: Oklahoma City Police chase stolen truck's driver down freeway, through fieldsThe driver of that vehicle got out of their vehicle and reportedly tried to shoot out the suspect's tires with a gun.The suspect was arrested after crashing their vehicle into a nearby pond. The suspect tried to run but was tased by authorities and placed into custody. 1110

(KGTV) - Halloween is Thursday, allowing San Diego children to collect candy for the sugar high they love - and parents dread. When kids return home from trick or treating with full buckets and pillowcases, not every candy will disappear on Halloween night. A study conducted by Bid-On-Equipment found California’s top candy is Kit Kat. What is your favorite Halloween candy? 383

(KGTV) - Halloween is Thursday, allowing San Diego children to collect candy for the sugar high they love - and parents dread. When kids return home from trick or treating with full buckets and pillowcases, not every candy will disappear on Halloween night. A study conducted by Bid-On-Equipment found California’s top candy is Kit Kat. What is your favorite Halloween candy? 383

(CNN) -- Scientists have discovered a "monster black hole" so massive that, in theory, it shouldn't exist.It's a stellar black hole — the type that forms after stars die, collapse, and explode. Researchers had previously believed that the size limit was no more than 20 times the mass of our sun because as these stars die, they lose most of their mass through explosions that expel matter and gas swept away by stellar winds.This theory has now been toppled by LB-1, the newly-discovered black hole. Located about 15,000 light years away, it has a mass 70 times greater than our sun, according to a press release from the Chinese Academy of Sciences.The findings were published by Chinese researchers in the journal Nature on Wednesday."Black holes of such mass should not even exist in our galaxy, according to most of the current models of stellar evolution," said Liu Jifeng, head of the team that made the discovery. "LB-1 is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation."Scientists are now scratching their heads at how LB-1 got so huge.The Chinese team has proposed a number of theories. LB-1's sheer size suggests that it "was not formed from the collapse of only one star," the study said -- instead, it could potentially be two smaller black holes orbiting each other.Another possibility is that it formed from a "fallback supernova." This is when a supernova -- the last stage of an exploding star -- ejects material during the explosion, which then falls back into the supernova, creating a black hole.This fallback formation is theoretically possible, but scientists have never been able to prove or observe it. If this is how LB-1 formed, then we may have "direct evidence for this process" for the first time, the study said.LB-1 is not the biggest black hole ever discovered -- but it may be the largest of its kind. There are several types of black holes, and stellar black holes like LB-1 are on the smaller side, according to NASA. Supermassive black holes are much bigger -- they can be billions of times the mass of our sun.Scientists believe supermassive black holes may be connected to the formation of galaxies, as they often exist at the center of the massive star systems -- but it is still not clear exactly how, or which form first.Stellar renaissanceStellar black holes are believed to be commonly scattered across the universe, but they are difficult to detect because they do not normally emit X-rays -- only doing so when they gobble up gas from a star that has ventured close enough. They are so elusive that scientists have only found, identified, and measured about two dozen stellar black holes, the press release said.The researchers at the Chinese Academy of Sciences tried a different approach. Instead of looking for X-rays emitted by black holes, the team looked for stars that were orbiting some invisible object, being pulled in by its gravity.Their efforts paid off -- they soon spotted a giant star eight times heavier than the sun, orbiting around what turned out to be LB-1."This discovery forces us to re-examine our models of how stellar-mass black holes form," said David Reitze, a physicist at the University of Florida. In May, Reitze's team made its own breakthrough discovery -- observing the never-before-seen collision of a neutron star and a black hole, which sent out ripples in space and time.These twin discoveries -- the collision, and now LB-1 -- indicate that scientists are reaching "a renaissance in our understanding of black hole astrophysics," said Reitze in the press release.There have been several other discoveries over the past year that have added to this renaissance. In October, researchers discovered what they believe to be a new type of black hole, smaller than the other kinds. And earlier this week, astronomers discovered a black hole that is actually helping baby stars grow instead of destroying them. 3971