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(KGTV) - If you're heading to KAABOO Del Mar this weekend, you're in for a packed schedule of musical acts and other performers that can't be missed.Here's a look at this weekend's lineups and times:FridaySunset Cliffs Stage 232

(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

(KGTV) - A workplace shooting at YouTube's San Bruno headquarters has left many local workers wondering, "what would I do?"Cody Perron, COO of the security firm Fidelis Global Group, said it initially comes down to two simple things every employee can do."Number one is maintain situational awareness, so anywhere you are whether it's public or your office space," Perron said. "If it's in public, be concerned with your surroundings and notice things that stand out, that are counter to normal activity in that environment. Same thing with your office space."RELATED: Federal agents search YouTube shooter's San Diego home, family's Menifee housePerron added that knowing the facility is also important."Second thing I would say is know your facility. So when you walk inside a facility, especially where you work, you should know where your entries and exits are. You should know your emergency action plans," said Perron.Perron leads participants through workshops to practice safety measures in case of a workplace shooting. In those classes, participants are taught how to assess their situation, barricade, and some basic takedowns.RELATED: Female shooters are rare. YouTube attacker joins short listAside from sitting through a three-hour class, he said his two points are things that can be practiced every day anywhere, like noticing people dresses or behaving in alarming ways."There are things you can apply every day when you walk into an environment," Perron said. "These are things you can practice every day, that sort of become second nature." 1587

(KGTV) - A bill that would create the option for a third gender marker on California driver's licenses and birth certificates is heading to the state Senate.SB 179, also known as the Gender Recognition Act and introduced by Senator Toni Atkins, passed through the State Assembly 50-13 and will now return to the Senate for approval of amendments made in the assembly.If approved in the Senate, it will head to Governor Jerry Brown's desk for signing.RELATED: San Diegan third in nation to change gender to 'nonbinary'California Assemblymember Todd Gloria (D-San Diego), a co-author of the bill, said the legislation aims to end the stigma and hardships Californians face when it comes to government documentation.“All too often, members of our transgender, intersex, and nonbinary community experience hardships and even stigma when their government documents don’t match their gender presentation," Gloria said in a release. "Despite the divisive rhetoric at the federal level, SB 179 demonstrates the inclusiveness of California and represents recognition from government that people can exist as more than just male or female."In addition to a third gender marker on state-issued identification documents, the bill is also designed to "streamline" the process for transgender, intersex, and nonbinary Californians to get those certificates.RELATED: Oregon becomes first state to allow gender-neutral licensesCurrently, changes to gender in California require proof of "clinically appropriate treatment." Atkins' bill does away with this requirement.Under the bill, anyone who chooses to change their gender would be allowed to "to attest, under penalty of perjury, that the request is to conform the person’s legal gender to the person’s gender identity and not for any fraudulent purpose."If approved, this portion of the bill would go into effect September 2018.In the case of driver's licenses, the bill would require an applicant to have the choices of male, female, or nonbinary, as specified, available. This portion would go into effect January 2019, according to the bill's text.Read the bill's full text here. 2164

(CNN) -- It was an impressive disguise: the snow-white beard, the oversized glasses, the wheelchair.But it was when the seemingly frail and elderly passenger reached security at New Delhi's Indira Gandhi International Airport -- India's busiest airport -- that he caught the attention of staff.At around 10.45 p.m. on the evening of September 8, the individual was hoping to get on an overnight flight to New York."He posed as if he was very old and incapacitated," Shrikant Kishore, a senior official with the Central Industrial Security Force, told CNN.Dressed in a white tunic and trousers, with a white turban and black slippers, the passenger proved reluctant to be frisked."Our screener asked the person in the wheelchair to stand. He said that he cannot stand. Our screener asked if he would stand with support. He reluctantly stood up."That's when the officer noticed that while the passenger's beard and hair were white, the roots were black. He also was working hard to avoid the officer's eyes.When asked for his passport, the individual handed over documentation claiming that he was Amrick Singh, born in Delhi in February 1938, making him 81 years old."He was definitely not 80 years old. His skin was of a younger person," Kishore told CNN.Upon further questioning, the man told security staff that he was, in fact, 32-year-old Jayesh Patel, a resident of Gujarat state.As he was holding a fake passport, he was detailed by security and handed over to immigration authorities.Kishore told CNN that he doesn't know what the current status of the case is or the reason behind the impersonation.Indira Gandhi International Airport, commonly known as Delhi Airport, is the 12th busiest airport in the world, with close to 70 million passengers traveling through it in 2018. 1792