Photographs can depict a whole story in just a few seconds.
January 20, 2017: Former US President Barack Obama and Former First Lady Michelle Obama welcome US President Donald Trump and his wife First Lady Melania to the White House as he is sworn in as the 45th president of the United States.
January 22, 2017: Protesters walk during the Women's March on Washington following the inauguration of President Donald Trump, with the U.S. Capitol in the background. 420 marches were reported in the U.S. and 168 in other countries, becoming the largest single-day protest in American history and the largest worldwide protest in recent history. Photo: Mario Tama/Getty Images
March 10, 2017: The UN warns that the world is facing the biggest humanitarian crisis since World War 2, with up to 20 million people at risk of starvation and famine in Yemen, Somalia, South Sudan and Nigeria. Pictured here is malnourished girl Jamila Ali Abdu (7), she lies on a hospital bed before she died in the Red Sea port city of Hodeidah, Yemen. Photo: Reuters/Abduljabbar Zeyad
March 13, 2017: Three hearses draw the five coffins of the victims of a tragic fire in Clondalkin on March 8. In the first hearse were Annemarie O’Brien, her daughter Paris (2), and in a separate tiny white coffin - her unborn son AJ. The second and third hearses brought the white caskets of Jordan (4) and Holly (3), whose mother Biddy O’Brien is recovering since the tragedy.
March 14, 2017: A member of the Irish Coast Guard looks out towards a misty Achill as the search continues for Rescue 116 along the Blacksod coastline in Co Mayo. The Coast Guard helicopter went missing in the early hours of the morning while providing top-cover for Sligo-based helicopter Rescue 118. The bodies of Captain Dara Fitzpatrick and Captain Mark Duffy were recovered, while the remains of winchman Ciarán Smith and winch operator Paul Ormsby remain missing. Photo: Steve Humphreys
March 29, 2017: Prime Minister Theresa May announces in the House of Commons, London, that she has triggered Article 50, starting a two-year countdown to the UK leaving the EU. Photo: PA Wire
May 22, 2017: An injured woman is helped out of the Manchester Arena after a terror attack at a gig by Ariana Grande. The attack left 23 people dead, included the attacker, and over 500 people were injured. Most of the victims were young children and teenagers who had been attending the pop concert. Photo: PA
June 3, 2017: Emergency services swarm to an incident near London Bridge on a Saturday evening. Eight people were killed when three attackers drove a van into pedestrians on London Bridge, before launching a knife attack in Borough Market. Officers arrived on the scene of the attack within eight minutes and shot the attackers dead. Photo: REUTERS/Hannah McKay
June 12, 2017: American student Otto Warmbier, pictured here being escorted at the Supreme Court in Pyongyang, North Korea, returns home in a coma after spending 17 months in a North Korean prison. He died a week later. Photo: AP
June 13, 2017: Enda Kenny TD is accompanied by his garda escort Detective Garda Frank White arriving for his last Cabinet meeting as Taoiseach at Government Buildings. He later addressed the chamber, saying; "'I have not got everything right but my motivation was always what I believed was best". Photo: Tom Burke
June 14, 2017: A massive fire engulfs a residential tower in west London overnight. The fire claimed the lives of 71 people, while survivors were the lucky ones who managed to navigate their way down smoke-filled stairwells. Children who survived the Grenfell Tower blaze urged viewers to “love and cherish your family” as they delivered this year’s alternative Christmas message on December 25. Photo: PA
June 15, 2017: Leo Varadkar receives his seal of office at Aras An Uachtarain by President Michael D. Higgins and becomes Ireland's youngest-ever Taoiseach. Photo: Steve Humphreys
July 20, 2017: Iraqi soldiers discover a German teenage girl alive in a tunnel under rubble in Islamic State's last redoubt in the Old City of Mosul. The girl, named Linda Wenzel, was married to a Chechen Islamic State fighter and has admitted to killing Iraqi troops, according to one of the soldiers who arrested her. She is now held in an Iraqi prison while she awaits trial.
August 9, 2017. Molly Martens Corbett (33) and her father, retired FBI agent Thomas Martens (67), are convicted in North Carolina of the second degree murder of Irishman Jason Corbett (39) in 2015. Both are now serving sentences of between 20 and 25 years in prison. Mr Corbett died from horrific head injuries sustained during a prolonged assault at the luxury home he shared with his wife, Molly. Pictured is an image that was released during the trial of Molly Martens on the night of the murder.
August 16, 2017: A mother-of-six and a man were killed, and another three people including a child were injured, after a gangland style attack on a house in a Ballymun housing estate. Innocent victims Antoinette Corbally (48) and Clinton Shannon (30) were killed as part of a dispute.
August 18, 2017: People gather around tributes laid on Las Ramblas, Barcelona after a minute’s silence for the victims pf a terror attack the day before. An attacker drove a van into pedestrians, killing 13 people and injuring at least 130 others, one of whom died 10 days later. Hours later, police killed five terror suspects in the town of Cambrils as they ran over pedestrians. Six civilians and one police officer were injured. One woman was later confirmed dead. Photo: Getty Images
August 25, 2017: The UN declares a military operation targeting Rohingya Muslims in Myanmar as a "textbook example of ethnic cleansing". Here a family of the ethnic minority walk on a muddy river bank upon crossing a stream on a local boat after crossing over to the Bangladesh side of the border near Cox's Bazar's Dakhinpara area. Photo: AP Photo/Bernat Armangue
August 25-30, 2017: Hurricane Harvey rolled over the Texas Gulf Coast on Saturday, smashing homes and businesses and lashing the shore with wind and rain so intense that drivers were forced off the road because they could not see in front of them. Jennifer Bryant looks over the debris where her family business once stood in the aftermath of the hurricane in Katy, Texas. (AP Photo/David J. Phillip)
September 6-10, 2017: The Caribbean and U.S. are struck by Hurricane Irma, a Category 5 hurricane. The storm causes at least 134 deaths and at least €53 billion in damage. Pictured here, departing passengers form a long queue to check in at Orlando International Airport ahead of Hurricane Irma making landfall. Photo: REUTERS/Gregg Newton
September 19, 2017: On the 32nd anniversary of the deadly 1985 Mexico City earthquake, a 7.1 earthquake strikes central Mexico, killing more than 350 people and leaving up to 6,000 injured and thousands more homeless, Here, rescue teams search for survivors in the rubble of a collapsed building in Mexico City. REUTERS/Henry Romero
September 22, 2017: It's the third devastating hurricane of the month for those in the U.S. and Caribbean. Yamary Morales looks at the damage at a neighbor's house after the area was hit by Hurricane Maria in Yabucoa, Puerto Rico. Hurricane Maria caused at least 94 deaths and damages amounted to €86bn. Photo: REUTERS/Carlos Garcia Rawlins
September 25, 2017: Taoiseach Leo Varadkar and British Prime Minister Theresa May in Downing Street discussing Brexit developments, including the future of the Irish border, the Common Travel Area and provisions to ensure the Northern Ireland peace process is protected. Photo: Facundo Arrizabalaga
October 7, 2017: A member of the FBI walks among piles of personal items at the scene of the Las Vegas mass shooting, days after the attack on October 1. Gunman Stephen Paddock fired more than 1,100 rounds in 10 minutes from his suite on the 32nd floor of the Mandalay Bay Hotel into a crowd of thousands of people attending a music concert below. He left 58 people dead and 546 injured. Photo: AP Photo/John Locher
October 16, 2017: It is perhaps the iconic picture of ex-Hurricane Ophelia. The O'Sullivan family are pictured looking out from the Glen Pier as the Atlantic major hurricane strikes the Co Kerry. It later emerged the funeral of the men's father was due to take place that Monday and was postponed due to the weather. Photo: Stephen Kelleghan
October 17, 2017: Fighters of Syrian Democratic Forces gesture the "V" sign at the frontline in Raqqa, Syria. The city is declared fully liberated from the Islamic State terror group. Photo: REUTERS/Rodi Said
October 18, 2017: Sonya Burke and Colm O'Callaghan from Crosshaven, Co Cork with their new baby Maria (6lbs 15oz) who was born during Hurricane Ophelia. Photo: Mark Condren
October 21, 2017: A Syrian infant suffering from severe malnutrition is carried by a nurse at a clinic in the rebel-controlled town of Hamouria, in the eastern Ghouta region on the outskirts of the capital Damascus. The infant, Sahar Dofdaa, lived for just over a month due to severe malnourishment. Her mother was too malnourished to feed her and the family could not afford food.
November 15, 2017: Armed soldiers stand on the road leading to President Robert Mugabe's office in Harare, Zimbabwe. Overnight, at least three explosions were heard in the capital, Harare, and military vehicles were seen in the streets. Mugabe is placed under house arrest, as the military take over the country. He resigns six days later, after 37 years of rule. (AP Photo/Tsvangirayi Mukwazhi)
November 27, 2017: Hurling star and Unicef Ireland goodwill ambassador Joe Canning in the largely-destroyed Maysaloun area of east Aleppo. Photo: Mark Condren
November 28, 2017: The world's most eligible bachelor Prince Harry and actress Meghan Markle announce their engagement to the world after a 16-month long-distance relationship. The photographs were set in the palace's White Garden, aka the Sunken Garden, which is a memorial dedicated to celebrating Princess Diana's life. Photo: Getty
They have the power to make you stop, think, talk, hope, smile or even cry.
We've looked back at the biggest events of the year, both in Ireland and abroad.
Former Taoiseach Enda Kenny stepped down, Leo Varadkar became the country's youngest-ever Taoiseach. A devastating fire in a Clondalkin apartment killed one woman, three children and an unborn child, and left another woman fighting for her life, while the Grenfell tower building fire in London claimed the lives of 71 people.
The waves off the west coast of Ireland became the final resting place for two of the country's heroes, Rescue 116 helicopter's Paul Ormsby and Ciarán Smith, while the remains of search and rescue heroes Captain Dara Fitzpatrick and Captain Mark Duffy were recovered.
Terror still grips Europe and beyond, and 2017 was no exception. Attacks in Manchester, London and Barcelona shocked nations across the globe.
In European politics, British PM Theresa May triggered Article 50, beginning the UK's long goodbye to the EU.
Extreme weather was a phenomenon in 2017 - with three hurricanes hitting the U.S. and the Caribbean within weeks, while Ireland battled its own ex-hurricane Ophelia, the most easternmost Atlantic hurricane on record. Three people lost their lives in Ireland's 48-hour storm.
And the world's poorest people are still battling injustices - the Rohingya people of Myanmar continue to flee from a miitary-led ethnic-cleansing operation, while those in Yemen, South Sudan, Somalia and Nigeria battle an ongoing famine.
The above gallery are photographs from the year of 2017, let us know if you have your own notable moments to include.