What is longer a light year or a year? Years are a unit of time; a lightyear is the distance travelled by light in a year which is 5.88 trillion miles . The two cannot be converted or directly compared. Edit
Sear each side of the steak in the pan for 2 â 5 minutes; peek underneath to know when to flip. You want it brown but not black (i.e., burnt). If you like your steak rare to medium rare, you can often stop here. Just check the internal temperature of the steak with your meat thermometer (see above). If you like your steak medium to well done, put it in the oven on a small rack over a baking sheet lined with tinfoil to roast for another 5-15 minutes. (Again, with the meat thermometer, youâll know exactly when to take it out.)
If you don't have access to a grill though: Heat olive oil in a pan until nearly smoking. Sear the steak on both sides until very brown. Transfer to an oven proof pan, add your mushrooms, place a pat of butter on top of the meat and bake at 425 for about 10 minutes to finish. This would be for a steak at least an inch thick. If it's less than that, then searing in the pan is really all you'll need to do. While your steak is in the oven, add 2 tbls heavy cream, fresh cracked pepper and a little red wine to the pan you seared in. Reduce this down and you'll have a nice pan sauce.