Gustaf Lagerbielke could be in line for a swift Celtic debut after Stephen Welsh suffered a knock hours after his new four-year contract was announced. The Swedish central defender signed on Wednesday and could face Kilmarnock in the Viaplay Cup on Sunday after Cameron Carter-Vickers was ruled out with a hamstring issue. Midfielder Reo Hatate will also be missing in Ayrshire after picking up a calf problem. Welsh made his first appearance in 10 months when he replaced Carter-Vickers at Pittodrie but his chances of getting an extended run have been placed in doubt. “He picked up a little bit of a knock today which is a shame for him considering he has just signed his deal,” boss Brendan Rodgers said. “But I am really pleased for him. He is a guy that loves Celtic, loves playing here. He has been a great player within the squad over the last number of years. Maybe not played as much as he would have liked but his heart is very much here and I am delighted for him that he has committed to signing.” Rodgers did not know how bad the knock was and did not give many details on Carter-Vickers and Hatate other than ruling them out of Sunday’s game. Celtic host St Johnstone in their next league match before travelling to Ibrox on September 3. Rodgers said: “We just have to assess them and see how they are over the coming weeks.” Lagerbielke played his final game for Elfsborg last Sunday, leaving them in pole position in the Swedish top flight after 19 matches after Celtic targeted him as a replacement for another Swede, Carl Starfelt. “He has been playing so fitness-wise he is fine,” said Rodgers, who declined to comment on reports linking Celtic with moves for Wolves winger Daniel Podence and Newcastle’s Ryan Fraser. “He is a highly-rated young player and I am looking forward to seeing him play. “The club have a great pipeline of players in place. There is always a plan if someone is to move on so he is one who has been looked at for a long time.” Speaking before his injury, Welsh declared he was looking to “kick on” under Rodgers. The 23-year-old’s previous contract was due to expire at the end of this season and it looked like his time with his boyhood club might be nearing an end when he struggled for game time under previous boss Ange Postecoglou. The Celtic academy graduate has been linked with moves away from Parkhead in recent transfer windows but Rodgers spoke highly of him after Sunday’s 3-1 win at Pittodrie. “Signing a new contract for the club that I’ve been brought up on and have supported my whole life was, for me, an easy decision,” Welsh told Celtic TV. “It’s time for me to kick on now and hopefully I can have a few good seasons. I want to keep improving and continue to play as many games as I can, especially with the manager in now. He’s been massive for me since he’s come in. “He’s one of the main reasons that I want to be at the club and I’m just looking forward to starting the season properly and going for it.” Welsh has made 53 appearances for Celtic since his debut in February 2020 and will compete for a centre-back berth with recent signing Maik Nawrocki as well as Carter-Vickers and Lagerbielke. “At a club of this stature, competition for places is going to be everywhere, all over the pitch,” he said. “So for me it’s natural to keep working hard, keep improving and show that the manager can trust me to go in and play. “Thankfully he’s done that so far and now we’ll look ahead to the season and hopefully more opportunities to come. To be at Celtic is all I can ask for and I will give 100 per cent to the club and hopefully do everyone proud.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Jurgen Klopp hails ‘monster’ Wataru Endo as his new James Milner Ange Postecoglou insists Tottenham have to be ‘united on and off the field’ Jesse Lingard has another week to secure short-term deal at West Ham

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Is there life on Mars? Well, according to new research, an alien crash landing there could explain puzzling new findings on the surface of the Red Planet. It comes after Nasa’s Curiosity Rover captured images of spiked protrusions on the surface back in April. The strange formations captured in the pictures seem to show a row of spikes and sharp angles emerging from rocks at the base of the Gale Crater, which is 154km long. The odd discovery has put scientists on high alert and it marks one of the most peculiar things ever recorded on the surface of Mars. Sign up to our free Indy100 weekly newsletter Astrobiologist Dr Nathalie Cabrol, who is from the NASA Ames Research Centre and Search for Extraterrestrial Intelligence (SETI) Institute, even said that it’s the “most bizarre” rock she’s seen in 20 years of studying the planet. The findings are so irregular, in fact, that experts cannot rule out the idea that they’re extraterrestrial in origin. “A fragment from an extraterrestrial or terrestrial spacecraft cannot be discounted with absolute certainty” the authors of new research published in the Journal of Astrobiology stated. The odd protrusions could be “sand spikes”, which form in certain sands as a result of strong earthquakes. Another theory posits that the formation could be debris from crashed spacecraft, and authors of the study have not ruled out that it could be the result of crafts launched by humans landing on the surface. "Given that possibly 10 or more craft have crashed upon the surface, coupled with the jettison of equipment associated with landing the rovers, it is possible the spikes and its substrate are human-made and consist of debris that fell onto the surface of Gale Crater," the paper reads. “Nevertheless, no debris field is evident and no evidence of any additional debris that may have originated on Earth. “Given its small size and that there are no known human-made analogs and no logical explanation as to what purpose these spikes may serve, it does not seem likely these specimens are the remnants of craft or equipment that fell into Gale Crater. One can only speculate about extraterrestrial origin." However, speaking to The Telegraph, Prof Richard Armstrong, of Aston University, Birmingham said: “There is no way of proving for certain what the spikes are but the balance of the evidence would suggest ‘sand spikes’ resulting from seismic activity on Mars.” 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.

By Aidan Lewis and Nafisa Eltahir CAIRO (Reuters) -Arab leaders at a Cairo summit on Saturday condemned Israeli bombardment of