The Sun has been punching holes in the Earth’s magnetic field lately – but that’s not as alarming as it sounds. Instead, they have been sparking magnificent light shows across Europe and North America, made up mainly of crimson auroras and sustained periods of red sky. The displays have been caused by disturbances in the Earth’s magnetic field, which happened after a massive ejection of plasma from the Sun came hurtling our way. The event, known as a coronal mass ejection, made a hole in the planet’s magnetic field, allowing highly charged particles to make their way in and cause a geomagnetic storm. Normally, the Northern Lights are made up of mainly green, with the occasional flash of other colours including red. However, longer periods of red light shows are very rare. The highly charged particles then get channelled towards the north and south poles, where they interact with gas molecules in the atmosphere. They, in turn, release photons, causing the aurora borealis in the north and aurora australis in the south. Normally, the Northern Lights are made up of mainly green, with the occasional flash of other colours including red. However, longer periods of red light shows are very rare. But what makes this geomagnetic storm different is that the particles coming from the Sun collided with oxygen atoms higher in the Earth’s atmosphere than normal. The altitude at which this interaction happens dictates the colour of the aurora. This time, the charged particles were between 300 and 400 kilometres in the sky. There, the oxygen is less concentrated and doesn’t need as much energy to cause it to react. It all adds up to a flash of crimson red light in the sky. Somewhat excitingly for aurora-watchers, this sort of event is likely to get more common over the next two years, as the Sun’s activity becomes heightened until its peak in roughly July 2025. Looks like there will be more of these incredible ruby light shows soon enough. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Researchers in Haiti once scanned the brains of three people believed to be long-deceased individuals returning from the dead - or zombies. In a study published in 1997, researchers investigated three such cases, using electroencephalography and DNA testing techniques to try and find a rational explanation for a Haitian Voodoo theory that the spirits of the dead can be captured by sorcerers called bokors, who use these souls to reanimate fresh corpses into zombies who walk around rural areas. One case involved a woman who had died aged 30 and was spotted three years later by family members who recognised her because of a distinctive facial mark. A local court then authorised the opening of the woman’s grave, revealing it to be full of rocks. Describing the 'zombie', the study authors explained that “she kept her head in a lowered position, and walked extremely slowly and stiffly, barely moving her arms.” She was also unable to communicate “but would occasionally murmur some incomprehensible but stereotyped words.” But the scan showed her “electroencephalogram and central nervous system examination were unremarkable” and said she may have had catatonic schizophrenia, but couldn't explain how she came back from the dead. Sign up to our free Indy100 weekly newsletter They proposed that the woman might not have died at all, but may instead have been poisoned by a “neuromuscular toxin” to induce catalepsy and trick relatives into thinking she was dead. A lack of oxygen within the grave may have resulted in brain damage, thus explaining her zombie-like state when she was taken out of the grave. Next, the study described a 26-year-old man who was seen at a local cockfight 19 months after being buried. The man’s uncle was subsequently found guilty of using sorcery to zombify the man, who was then kept chained to a log at his parents’ house. But clinical examinations found nothing weird and the man was diagnosed with “organic brain syndrome and epilepsy.” And DNA testing revealed that he was not even the man who had died shortly beforehand. In a similar case, a 31-year-old woman was identified as a villager who had been dead for 13 years. Once again, however, a medical examination revealed that she was a normal human while genetic analyses showed that she was not the dead individual after all. The study authors concluded that “mistaken identification of a wandering, mentally ill, stranger by bereaved relatives is the most likely explanation.” Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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